Project Start Date: Tue 1/2/01
Project Finish Date: Sun 5/5/02
Name | Percent Complete | Start Date | Finish Date | Priority | Resource Initials | Predecessors | Successors | Notes |
---|---|---|---|---|---|---|---|---|
Hardware | 36% | Tue 1/2/01 | Mon 4/29/02 | Medium | The implementation of hardware and any software needed to communicate with that hardware. ... | |||
General hardware | 93% | Wed 1/10/01 | Tue 1/23/01 | High | 11,60 | Basic hardware components that almost all commissioning tasks will depend upon. As such, these tasks have a high priority.... | ||
DCR tests | 100% | Wed 1/10/01 | Thu 1/11/01 | High | Comm,M&C,Mock | Verify that DCR manager works, is correct, and is reliable.... | ||
LO1 tests | 100% | Thu 1/11/01 | Fri 1/12/01 | High | Verify that LO1 hardware works and that its manager works, is correct, and is reliable.... | |||
Test LO1 manager | 100% | Fri 1/12/01 | Fri 1/12/01 | High | Comm,M&C,Mock | Verify that LO1 manager works, is correct, and is reliable. This work can be done without the GBT and as part of mockup testing. It is essentially a check that the software and hardware interfaces work properly. The work involves CLEO and the 'mocku... | ||
Check LO1 frequency | 100% | Thu 1/11/01 | Thu 1/11/01 | High | Comm,Eng,Mock | Verify that LO1 hardware works. This work can be done without the GBT and as part of mockup testing. The work involves CLEO and the 'mockup' installation. | ||
I.F. Rack Tests | 100% | Fri 1/12/01 | Wed 1/17/01 | High | Verify that IF Rack hardware works and that its manager works, is correct, and is reliable.... | |||
Test I.F. manager | 100% | Tue 1/16/01 | Wed 1/17/01 | High | Comm,M&C,Mock | Verify that IF Rack manager works, is correct, and is reliable. This work can be done without the GBT and as part of mockup testing. It is essentially a check that the software and hardware interfaces work properly. The work involves CLEO and the 'm... | ||
Test I.F. hardware | 100% | Fri 1/12/01 | Wed 1/17/01 | High | Comm,Eng,Mock | Verify that IF Rack hardware works. This work can be done without the GBT and as part of mockup testing. It is essentially a check that the software and hardware interfaces work properly. The work involves CLEO and the 'mockup' installation.... | ||
Test Switch Sig Sel | 50% | Fri 1/19/01 | Tue 1/23/01 | High | Comm,M&C,Mock | Verify that the Switching Signal manager works, is correct, and is reliable.... | ||
Electronics ready for continuum commissioning | 0% | Tue 1/23/01 | Tue 1/23/01 | High | 2 | 181 | Milestone indicating that work has finished on the most critical hardware components for the first stages of commissioning. | |
Optical pointing telescope | 0% | Wed 1/3/01 | Wed 1/31/01 | High | 15 | The optical pointing telescope will be extremely useful if it were available early during the commissioning of the GBT for determining pointing coefficients. As such, these tasks have a high priority.... | ||
Complete optical telescope hardware | 0% | Wed 1/3/01 | Tue 1/9/01 | High | Comm,Eng | The telescope is not yet completed. It must be mounted and, if possible, have its automatic lens cap in place. | ||
Complete optical telescope software | 0% | Thu 1/25/01 | Wed 1/31/01 | High | Comm,M&C | The software for controlling the unit, acquiring the data, and processing the results has not yet been finished. | ||
Optical pointing telescope ready for commissioning | 0% | Wed 1/31/01 | Wed 1/31/01 | High | 12 | 212 | Milestone indicating that work has finished on the optical pointing telescope for the first stages of commissioning.... | |
Spectrometer hardware | 50% | Wed 1/24/01 | Fri 8/10/01 | Medium | 29,60 | The spectrometer will be needed before spectral-line commissioning starts. For commissioning to proceed, only the low-speed, 3-bit mode needs to be implemented. The other modes have a low priority since commissioning can proceed without them and, as ... | ||
Implement Spectrometer low-speed 3-level sampler modes | 50% | Wed 1/24/01 | Wed 2/7/01 | Medium | M&C,Eng | 18 | Engineering/programmers finish the low-speed/3-level mode of the Spectrometer for 1st round spectral-line commissioning. This is the only mode that other commissioning tasks will rely on. | |
Verify M&C manager robustness - Spectrometer | 50% | Fri 3/2/01 | Thu 3/15/01 | Medium | Comm,M&C,CLEO,Mock | 17 | 19 | Verify that Spectrometer manager works, is correct, and is reliable.... |
Measure Spectrometer bandpass on CW signal - low speed | 50% | Fri 4/20/01 | Fri 5/4/01 | Medium | Comm,Mock,Eng,M&C | 18 | 28 | These tests use a noise source for an input and the mockup and shouldn't require the GBT. Also needed will be Aips++ and CLEO.... |
Implement Spectrometer high-speed sampler modes | 50% | Thu 2/15/01 | Fri 2/23/01 | Low | M&C,Eng | 21 | Engineering/programmers finish the high-speed sampler modes. ... | |
Measure Spectrometer bandpass on CW signal - high speed | 46% | Mon 7/2/01 | Thu 7/12/01 | Low | Comm,Mock,Eng,M&C | 20 | These tests use a noise source for an input and the mockup and shouldn't require the GBT. Also needed will be Aips++ and CLEO.... | |
Implement Spectrometer 9-level modes | 50% | Fri 2/23/01 | Fri 3/2/01 | Low | M&C,Eng | 23 | Engineering/programmers finish the 9-level mode.... | |
Measure Spectrometer bandpass on CW signal - 9-level | 50% | Tue 7/3/01 | Mon 7/16/01 | Low | Comm,Mock,M&C,Eng | 22 | These tests use a noise source for an input and the mockup and shouldn't require the GBT. Also needed will be Aips++ and CLEO.... | |
Implement Spectrometer pulsar mode | 50% | Fri 7/6/01 | Fri 8/10/01 | Low | Comm,M&C,Eng,CLEO | NOTE: The implementation of the pulsar mode has not yet been started and the effort is not yet well known. Subtasks still need to be defined. If the Spectrometer is unavailable when pulsar commissioning starts, attempts will be made to use the Spectr... | ||
Spectral Processor hardware | 25% | Thu 3/8/01 | Tue 6/26/01 | Low | 30,60 | The Spectral Processor hardware and software is essentially in good shape. However, no significant mockup tests have exercised the instrument, with its new interfaces, in the modes most users will want. Estimates here are broad guesses.... | ||
Implement spectral Line - SP | 50% | Thu 3/8/01 | Wed 3/28/01 | Medium | Comm,M&C | 28 | SP Spectral-line mode is implemented/verified. -- Need to specify subtasks | |
Implement pulsar - SP | 0% | Tue 6/19/01 | Tue 6/26/01 | Low | Comm,M&C | SP pulsar mode is implemented/verified. --Need to specify subtasks | ||
Electronics ready for spectral-line Commissioning | 0% | Fri 5/4/01 | Fri 5/4/01 | Medium | 19,26 | 310,34 | Milestone indicating that work has finished on the Spectrometer for the spectral-line stage of commissioning. | |
Spectrometer ready for general use | 0% | Fri 8/10/01 | Mon 8/13/01 | Low | 16 | Milestone indicating that work has finished on all of the Spectrometer and it is now ready for all users. | ||
Spectral Processor ready for use | 0% | Tue 6/26/01 | Tue 6/26/01 | Low | 25 | Milestone indicating that Prime Focus 2 Receiver is ready for commissioning. | ||
LO1 Counter Hardware | 0% | Fri 2/9/01 | Thu 4/5/01 | Medium | 34,60 | The LO1 Counter's hardware/software interface has not yet been started. Without the counter, continuum commissioning can go on but will be awkward. Until the counter is completed, spectral-line commissioning will be difficult and Doppler tracking co... | ||
Implement LO1 Counter | 0% | Fri 2/9/01 | Fri 2/16/01 | Medium | M&C,Eng | 33 | Engineering/programmers finish LO1 Counter's hardware and software interfaces. | |
Verify M&C manager robustness - LO1 Counter | 0% | Thu 3/29/01 | Thu 4/5/01 | Medium | Comm,M&C,CLEO,Mock | 32 | Verify that the LO1 Counter manager works, is correct, and is reliable.... | |
Electronics Ready for Doppler commissioning | 0% | Fri 5/4/01 | Fri 5/4/01 | Medium | 31,28 | Milestone indicating that work has finished on the LO1 Counter for the spectral-line stage of commissioning. | ||
Holography hardware | 0% | Thu 2/1/01 | Thu 2/8/01 | Medium | 60,38 | The Holography system needs to be completed and checked before we can begin holographic measurements of the GBT surface. The holographic system still needs some lab testing before being moved onto the telescope where other preliminary tests will be ne... | ||
Verify M&C manager robustness - Holography | 0% | Thu 2/1/01 | Fri 2/2/01 | Medium | Comm,M&C,Mock | 37 | Verify that the Holography manager works, is correct, and is reliable.... | |
Measure Holography phase stability on CW signal | 0% | Thu 2/8/01 | Thu 2/8/01 | Medium | Comm,Eng,Mock | 36 | Insures the hardware has sufficient phase stability. Tests require the mockup, a CW signal from a synthesizer, a power splitter. The tests include:... | |
Holography hardware ready for commissioning | 0% | Thu 2/8/01 | Thu 2/8/01 | Medium | 35 | 247 | Milestone indicating that work has finished on the Holography for the surface measurement stage of commissioning. | |
VLBI hardware and software | 45% | Fri 3/16/01 | Mon 4/29/02 | Medium | 60,48 | These tasks implement an interfaces for performing VLB observations with the GBT. The tasks are in three stages:... | ||
Specify VLBI software interfaces | 100% | Fri 3/16/01 | Thu 3/22/01 | Medium | Comm,Eng,M&C | 42 | Specifies the software interface that will be used to control and coordinate the GBT and VLBA recorders | |
Upgrade VLBA software to current version | 75% | Tue 4/24/01 | Thu 5/3/01 | Medium | Comm,M&C,Eng | 42 | Before designing and implementing the coordination software, the VLBA software will need to be upgraded and tested. | |
Design VLBI software communication | 75% | Fri 5/18/01 | Fri 5/25/01 | Medium | Comm,M&C,Eng | 40,41 | 43 | Designing the detailed code that will perform the communication and control. |
Code and test VLBI software | 75% | Fri 5/25/01 | Mon 6/4/01 | Medium | Comm,M&C,Eng,CLEO,Mock | 42 | 47 | The actual VLBA coding followed by testing of the software and hardware. |
Specify new S2 communication software | 0% | Tue 4/16/02 | Mon 4/22/02 | Very Low | Comm,M&C,Eng | 45 | The specification and design of the software interfaces for controlling and coordinating the GBT and the S2 recorders. | |
Implement S2 system with GBT | 0% | Mon 4/22/02 | Mon 4/29/02 | Very Low | Comm,M&C,Eng,Mock | 44 | The actual S2 coding followed by testing of the software and hardware. | |
Upgrade VLBA formatter for 2-recorders | 0% | Thu 4/18/02 | Wed 4/24/02 | Very Low | Comm,M&C,Eng,Mock | Hardware upgrade that will allow the use of two recorders simultaneously. | ||
Preliminary VLBI hardware ready | 0% | Mon 6/4/01 | Mon 6/4/01 | Medium | 43 | Milestone indicating that work has finished on the VLB system for that stage of commissioning.... | ||
VLB/S2 hardware ready for general users. | 0% | Mon 4/29/02 | Mon 4/29/02 | Medium | 39 | Milestone indicating that all of the VLB system is ready for general users. | ||
Measure clock & switching-signal delays | 90% | Sun 1/14/01 | Mon 1/15/01 | Medium | Comm,Eng,Mock | Measures round-trip timing delays for switching signals for pulsar observing. | ||
40-52 GHz hardware/software | 0% | Tue 1/2/01 | Tue 4/10/01 | Medium | 54,60,273,278 | The completion of the 40-52 GHz receiver system. The commissioning tasks that rely on this receiver are those that define the end of what has been called Phase II commissioning.... | ||
Complete 40-52 GHz hardware | 0% | Tue 1/2/01 | Tue 1/2/01 | Medium | 52 | The 40-52 GHz receiver is already finished. | ||
Implement 40-52 GHz M&C manager | 0% | Fri 2/2/01 | Mon 2/26/01 | Medium | M&C,CLEO | 51 | 53 | The hardware and software interfaces to the receiver's manager needs to be implemented. This includes developing the CLEO application for the receiver. |
Verify 40-52 GHz M&C manager | 0% | Sat 4/7/01 | Tue 4/10/01 | Medium | Comm,M&C,Mock | 52 | Verify that the 40-52 GHz Receiver manager works, is correct, and is reliable.... | |
40-52 GHz Rcvr. ready for use | 0% | Tue 4/10/01 | Tue 4/10/01 | Medium | 50 | 354 | Milestone indicating that 40-52 GHz Receiver is ready for commissioning. | |
Prime Focus 2 hardware | 0% | Fri 6/1/01 | Tue 6/26/01 | Low | 59,60 | The PF2 receiver might be finished by the beginning of summer 2000. No tasks requiring the receiver can proceed until about then. Because of the uncertainty of the delivery date and how far into the future it probably will be, these tasks and those t... | ||
Complete PF2 hardware | 0% | Fri 6/1/01 | Fri 6/1/01 | Low | Eng | 57 | The PF2 receiver might be finished by the beginning of summer 2000. No tasks requiring the receiver can proceed until about then. | |
Implement PF2 M&C manager | 0% | Mon 6/4/01 | Mon 6/25/01 | Low | M&C,CLEO | 56 | 58 | The hardware and software interfaces to the receiver's manager needs to be implemented. This includes developing the CLEO application for the receiver.... |
Verify PF2 M&C manager | 0% | Tue 6/26/01 | Tue 6/26/01 | Low | Comm,M&C,Mock | 57 | Verify that the PF2 Receiver manager works, is correct, and is reliable.... | |
Prime Focus 2 Rcvr. ready for use | 0% | Tue 6/26/01 | Tue 6/26/01 | Low | 55 | 274,439 | Milestone indicating that Prime Focus 2 Receiver is ready for commissioning. | |
All hardware has been Implemented | 0% | Mon 4/29/02 | Mon 4/29/02 | Medium | 2,16,31,35,39,50,25,55 | Milestone indicating all hardware components are ready for general use. | ||
Observing techniques | 20% | Tue 1/2/01 | Mon 9/24/01 | Medium | The tools needed for observations. Task categories include:... | |||
General observing techniques | 100% | Tue 1/2/01 | Tue 1/2/01 | Very High | 93,107 | Observing techniques and tools that are prerequisites for any commissioning or astronomical observation. Priorities of these tasks are high since much of commissioning rely on the products of the tasks. | ||
Verify observing catalogs/tables | 100% | Tue 1/2/01 | Tue 1/2/01 | Very High | GO,Mock,Comm | Uses the mockup to verify that "GBT Observe" can successfully execute files that cover many hours of observations. | ||
Tracking | 58% | Wed 1/3/01 | Mon 1/22/01 | Very High | 93,107 | Tasks that verify that the M&C system, under "GBT Observe" control, uses the correct algorithms for positioning the telescope. These tasks do not require the GBT but a combination of the mockup, code reviews, etc. Priorities are high since all focus/... | ||
Verify ephemeredes calculations | 50% | Wed 1/3/01 | Tue 1/9/01 | Very High | Comm,M&C,GO | Use mockup to verify the correctness of ephemeredes calculations used in "GBT Observe" and the Antenna manager. The resulting positions from mockup telescope moves are compared to those generated by an independent ephemeredes program. | ||
Verify refraction calculations | 50% | Tue 1/9/01 | Mon 1/22/01 | Very High | Comm,M&C,GO | Use mockup to verify the correctness of refraction calculations used in "GBT Observe" and the Antenna manager. When last checked, the results of the currently-implemented refraction calculations differ from those generated by algorithms that are promo... | ||
Verify proper use of pointing coefficients | 100% | Mon 1/15/01 | Tue 1/16/01 | Very High | Comm,M&C,GO | Use mockup to verify the correctness of pointing calculations used in "GBT Observe" and the Antenna manager. | ||
Observing parameters for stage 1 commissioning | 0% | Tue 2/13/01 | Thu 2/15/01 | Very High | 93,107 | The determination of the parameters that will best and most efficiently perform various types of observations needed for Stage 1 of commissioning. These parameters will be a function of beam size and, therefore, observing frequency. This is basically... | ||
Determine cross scans optimum parameters(f) | 0% | Tue 2/13/01 | Wed 2/14/01 | Very High | Comm,GO | The determination of the parameters that will best and most efficiently perform pointing cross scans as a function of frequency. | ||
Determine focus scans optimum parameters(f) | 0% | Wed 2/14/01 | Thu 2/15/01 | Very High | Comm,GO | The determination of the parameters that will best and most efficiently perform focus observations as a function of frequency. | ||
Observing parameters for stage 2/general use | 0% | Thu 3/29/01 | Fri 6/29/01 | Low | 94 | The determination of the parameters that will best and most efficiently perform various types of observations needed for Stage 2 of commissioning and general users. These parameters will be a function of beam size and, therefore, observing frequency. ... | ||
Determine 5-point optimum parameters(f) | 0% | Thu 3/29/01 | Fri 3/30/01 | Low | Comm,GO | The determination of the parameters that will best and most efficiently 5-point pointing cross scans as a function of frequency.. | ||
Determine OTF optimum mapping parameters | 0% | Thu 6/21/01 | Thu 6/21/01 | Low | Comm,GO | The determination of the parameters that will best and most efficiently perform OTF mapping observations. | ||
Determine position-switched parameters | 0% | Fri 6/22/01 | Fri 6/22/01 | Low | Comm,GO | The determination of the parameters that will best and most efficiently perform position-switched observations. | ||
Determine frequency-switching parameters | 0% | Mon 6/25/01 | Mon 6/25/01 | Low | Comm,GO | The determination of the parameters that will best and most efficiently perform frequency-switched observations. | ||
Determine beam-switching parameters | 0% | Tue 6/26/01 | Wed 6/27/01 | Low | Comm,GO | The determination of the parameters that will best and most efficiently perform beam-switched observations. | ||
Determine polarization switching parameters | 0% | Wed 6/27/01 | Thu 6/28/01 | Low | Comm,GO | The determination of the parameters that will best and most efficiently perform polarization-switched observations. | ||
Determine grid optimum mapping parameters | 0% | Thu 6/28/01 | Fri 6/29/01 | Low | Comm,GO | The determination of the parameters that will best and most efficiently perform a grid mapping observations. | ||
Continuum observing techniques | 69% | Thu 1/18/01 | Mon 7/16/01 | Very High | 118 | The creation and testing of continuum observing methods mostly residing within "GBT Observe" ... | ||
Continuum observing techniques - Stage 1 commissioning | 76% | Thu 1/18/01 | Tue 2/13/01 | Very High | 84,93 | The creation and testing of continuum observing methods needed at the earliest stages of commissioning. Hence, why these tasks have a high priority. | ||
Verify continuum tracking observing script | 100% | Tue 1/23/01 | Tue 1/23/01 | Very High | Comm,M&C,GO,Mock | Use the mockup to test continuum observing script for tracking a celestial position. | ||
Implement and verify continuum cross-scans observing script | 100% | Wed 1/24/01 | Thu 1/25/01 | Very High | Comm,M&C,GO,Mock | Implement the observing script for performing cross scans for pointing. Use the mockup to test the observing script. ... | ||
Implement and verify PF and Greg. focus tracking script | 50% | Thu 1/18/01 | Tue 2/13/01 | Very High | Comm,M&C,GO,Mock | Implement the observing script for performing observations for focus tracking. Use the mockup to test the observing script. ... | ||
Continuum observing techniques - Stage 2 commissioning | 84% | Thu 1/25/01 | Wed 2/21/01 | Medium | 80 | 89,94 | The creation and testing of continuum observing methods needed at stage 2 of continuum commissioning. | |
Implement acceptance of pointing results from Aips++ | 100% | Thu 1/25/01 | Thu 2/8/01 | Medium | Aips++,GO,Comm,Mock | Although the stage 1 tools will suffice for the first week or two of commissioning, it is of high importance to develop a method that will perform something like the following steps:... | ||
Implement and verify continuum OTF mapping observing script | 75% | Fri 2/9/01 | Fri 2/16/01 | Medium | Comm,M&C,GO,Mock | Use mockup to test observing script for performing a continuum OTF 2-dimenional map. More details on the parameters and actions of the script will be provided when we have a better feel for what the GBT can accomplish and what we will need. | ||
Implement and verify continuum beam-switching observing script | 0% | Wed 2/21/01 | Wed 2/21/01 | Medium | Comm,M&C,GO,Mock | Use mockup to test observing script for performing a continuum beam-switched observation. More details on the parameters and actions of the script will be provided when we have a better idea of the design of the Q-band tertiary.... | ||
Implement and verify continuum polarization-switching observing script | 0% | Tue 2/20/01 | Tue 2/20/01 | Medium | Comm,M&C,GO,Mock | Use mockup to test observing script for performing a continuum polarization-switched observation. More details on the parameters and actions of the script will be provided when we have a better idea of the capabilities of various receiver's polarizati... | ||
Continuum observing techniques - General use | 0% | Fri 6/29/01 | Mon 7/16/01 | Low | 84 | The creation and testing of continuum observing methods not needed for commissioning but required by astronomers. Since these tasks are not needed for commissioning, they have been given a low priority. Priorities will be reassigned when we know that... | ||
Implement and verify continuum on-off observing script | 0% | Fri 6/29/01 | Mon 7/2/01 | Low | Comm,M&C,GO,Mock | Use mockup to test observing script for performing a continuum on-off observation. More details on the parameters and actions of the script will be provided at a later time.... | ||
Implement and verify continuum 5-point observing script | 0% | Mon 7/2/01 | Mon 7/2/01 | Low | Comm,M&C,GO,Mock | Use mockup to test observing script for performing a 5-point continuum pointing observation. More details on the parameters and actions of the script will be provided at a later time.... | ||
Implement and verify continuum grid mapping observing script | 0% | Fri 7/13/01 | Mon 7/16/01 | Low | Comm,M&C,GO,Mock | Use mockup to test observing script for performing a continuum grid map. More details on the parameters and actions of the script will be provided at a later time.... | ||
GBT Observe Ready for stage 1 continuum commissioning | 0% | Thu 2/15/01 | Thu 2/15/01 | Very High | 80,64,68,62 | 181 | Milestone indicating continuum observing scripts are ready for stage 1 commissioning. | |
GBT Observe Ready for stage 2 continuum commissioning | 0% | Fri 6/29/01 | Fri 6/29/01 | Medium | 84,71 | 189,310 | Milestone indicating continuum observing scripts are ready for stage 2 commissioning. | |
Spectral line observing techniques | 9% | Thu 2/22/01 | Mon 9/24/01 | Medium | 118 | The creation and testing of spectral-line observing methods mostly residing within "GBT Observe" ... | ||
Line observing techniques - Commissioning | 34% | Thu 2/22/01 | Mon 4/30/01 | Medium | 100,107,108 | The creation and testing of line observing methods needed for commissioning. | ||
Verify line tracking observing script | 100% | Mon 4/30/01 | Mon 4/30/01 | Medium | Comm,M&C,GO,Mock | Use the mockup to test line observing script for tracking a celestial position. | ||
Implement and verify line position-switching observing script | 0% | Thu 2/22/01 | Thu 2/22/01 | Medium | Comm,M&C,GO,Mock | Use the mockup to test observing script for performing a line position-switched observation.. | ||
Implement and verify line frequency-switching observing script | 0% | Mon 4/2/01 | Mon 4/2/01 | Medium | Comm,M&C,GO,Mock | Use the mockup to test observing script for performing a line frequency-switched observation.. | ||
Line observing techniques -- General use | 0% | Wed 7/18/01 | Mon 9/24/01 | Low | 96 | The creation and testing of line observing methods not needed for commissioning but required by astronomers. Since these tasks are not needed for commissioning, they have been given a low priority. Priorities will be reassigned when we know that an o... | ||
Implement and verify line beam-switching observing script | 0% | Wed 7/18/01 | Wed 7/18/01 | Low | Comm,M&C,GO,Mock | Use mockup to test observing script for performing a line beam-switched observation. More details on the parameters and actions of the script will be provided when we have a better idea of the design of the Q-band tertiary.... | ||
Implement and verify line polarization-switching observing script | 0% | Wed 7/18/01 | Thu 7/19/01 | Low | Comm,M&C,GO,Mock | Use mockup to test observing script for performing a line polarization-switched observation. More details on the parameters and actions of the script will be provided when we have a better idea of the capabilities of various receiver's polarization sw... | ||
Implement and verify line cross-scan observing script | 0% | Thu 7/19/01 | Fri 7/20/01 | Low | Comm,M&C,GO,Mock | Use mockup to test observing script for performing a line cross scan. More details on the parameters and actions of the script will be provided at a later time.... | ||
Implement and verify line 5-point observing script | 0% | Thu 7/19/01 | Fri 7/20/01 | Low | Comm,M&C,GO,Mock | Use mockup to test observing script for performing a line 5-point pointing observation. More details on the parameters and actions of the script will be provided at a later time.... | ||
Implement and verify line OTF mapping observing script | 0% | Thu 9/20/01 | Fri 9/21/01 | Low | Comm,M&C,GO,Mock | Use mockup to test observing script for performing a line OTF 2-dimenional map. More details on the parameters and actions of the script will be provided when we have a better feel for what the GBT can accomplish and what we will need.... | ||
Implement and verify line Grid mapping observing script | 0% | Mon 9/24/01 | Mon 9/24/01 | Low | Comm,M&C,GO,Mock | Use mockup to test observing script for performing a line grid map. More details on the parameters and actions of the script will be provided at a later time.... | ||
GBT Observe Ready for line commissioning | 0% | Mon 4/30/01 | Mon 4/30/01 | Medium | 96,68,64,62 | 310 | Milestone indicating line observing scripts are ready for commissioning.... | |
Doppler tracking techniques | 0% | Tue 5/22/01 | Thu 5/31/01 | Medium | 96 | 111,118 | The GBT M&C system Doppler tracking algorithm is still not yet fully established and is being developed. GBT Observe also needs to implement its side of providing input parameters for Doppler tracking.... | |
Implement Doppler tracking algorithm | 0% | Tue 5/22/01 | Tue 5/29/01 | Medium | Comm,M&C,GO | 110 | Implementation of the M&C and GBT Observe parts of the Doppler tracking algorithm. Commissioners will be involved in the determination of the algorithm. | |
Verify Doppler tracking on a test CW source | 0% | Tue 5/29/01 | Thu 5/31/01 | Medium | Comm,Eng,M&C,Mock | 109 | Use mockup to test Doppler tracking algorithms on a CW source in the mockup. | |
GBT Observe ready for Doppler experiments | 0% | Thu 5/31/01 | Thu 5/31/01 | Medium | 108 | Milestone indicating line observing scripts implementing Doppler tracking are ready for commissioning. | ||
Holography techniques | 0% | Fri 2/23/01 | Mon 2/26/01 | Medium | 114 | The creation and testing of the observing techniques and scripts for holographic observations. | ||
Implement and verify OTF holographic script | 0% | Fri 2/23/01 | Mon 2/26/01 | Medium | Comm,M&C,GO,Mock | Implementation of holography observing script and subsequent testing of the script in the mockup.... | ||
GBT Observe ready for Holography | 0% | Mon 2/26/01 | Mon 2/26/01 | Medium | 112 | 247 | Milestone indicating line observing scripts are ready for holography observations.... | |
Implement and verify GO I.F./ L.O. routing | 0% | Wed 5/2/01 | Wed 5/16/01 | Medium | Comm,GO,Mock | 118 | Although not needed for commissioning, for general observers GBT Observe will need to determine how best to set up the L.O. and I.F. system for a particular observation and then set up the switches, synthesizers, and filters for the observation. | |
Pulsar observing techniques | 0% | Tue 6/5/01 | Tue 6/19/01 | Medium | Comm,M&C,GO,Mock | 118 | Determine, implement and test pulsar observing techniques and scripts. Subtasks will need to be specified. | |
VLBI observing techniques | 0% | Wed 4/4/01 | Tue 5/1/01 | Medium | Comm,M&C,GO,Mock | 118 | Determine, implement and test VLBI observing techniques and scripts. This task might be redundant with the VLB tasks under the Hardware summary task. | |
GBT Observe ready for general use | 0% | Mon 9/24/01 | Mon 9/24/01 | Medium | 95,79,108,115,116,117 | Milestone indicating GBT Observe and all expected observing techniques are ready for general use.... | ||
Data reduction | 15% | Tue 1/2/01 | Tue 9/25/01 | Medium | These tasks describe what data reduction tools are going to be needed for other commissioning tasks as well as those that will be tested during commissioning but whose users will be the general telescope user.... | |||
General data reduction | 76% | Tue 1/2/01 | Wed 1/3/01 | Very High | 127,163 | Data analysis tools that will be the basis behind all needed tools. As such, these tasks are given a high priority since very little commissioning or data reduction development can happen without them. | ||
Implement baseline fitting (polynomial, sinusoid) | 100% | Tue 1/2/01 | Tue 1/2/01 | Very High | Aips++ | Basic data reduction algorithm for fitting a polynomial and sinusoidal baseline to a 1-dim array of data points, either continuum or line. | ||
Implement Gaussian fitting (single, multi) | 100% | Tue 1/2/01 | Tue 1/2/01 | Very High | Aips++ | Basic data reduction algorithm for fitting one or more Gaussians to a 1-dim array of data points, either continuum or line.... | ||
Implement template fitting | 80% | Tue 1/2/01 | Tue 1/2/01 | Very High | Aips++ | Basic data reduction algorithm for fitting a template to a 1-dim array of data points, either continuum, line, focus offset, etc.... | ||
Implement observations data base | 50% | Wed 1/3/01 | Wed 1/3/01 | Very High | Aips++ | Since we expect to be taking thousands of observations for various commissioning tasks under various conditions, the access to the data must have a data base that can be queried to determine what observations are of interest for a particular data reduc... | ||
Implement scripting tools | 50% | Wed 1/3/01 | Wed 1/3/01 | Very High | Aips++ | Basic scripting language for pasting algorithms together. When Aips++'s general tools are not adequate for a task, or have not yet been developed, we will need a medium-power scripting tool for processing a list of observations. The list will probabl... | ||
Continuum data reduction | 21% | Wed 1/3/01 | Thu 7/19/01 | Medium | 180 | Data reduction tools explicitly for continuum data. | ||
Continuum data reduction - Stage 1 commissioning | 36% | Wed 1/3/01 | Wed 1/10/01 | Very High | 120 | 149 | These are the continuum data reduction tasks and algorithms that will be needed early on in commissioning and, therefore, have a very high priority.... | |
Verify Aips++ DCR filler | 100% | Wed 1/3/01 | Thu 1/4/01 | Very High | Comm,Aips++,Mock | Verifies that that Aips++ filler still works with the new measurement sets. | ||
Implement multi-purpose continuum plotting tools | 0% | Thu 1/4/01 | Wed 1/10/01 | Very High | Aips++,Comm | Basic Continuum routines for plotting a 1-dim continuum observation. The plotting axes can be combinations of any of the following:... | ||
Implement 1-d continuum OTF regridding | 0% | Thu 1/4/01 | Fri 1/5/01 | Very High | Aips++,Comm | Basic Continuum routine for regridding 1-dim data onto a user-specified grid. | ||
Implement cross-scan pointing data reduction | 100% | Tue 1/9/01 | Wed 1/10/01 | Very High | Aips++,Comm | Basic Continuum routine for reducing a cross-scan pointing observation. The script will assume the following order of observations from GBT Observe:... | ||
Implement 1-d focus-curve fitting | 0% | Fri 1/5/01 | Mon 1/8/01 | Very High | Aips++,Comm | Basic Continuum routines for reducing 1-dim focus curves. The algorithm will fit a user-specified focus template to a 1-dim focus measurement of intensity vs. focus offset. The result of the fit should be the focus offset that produces the highest in... | ||
Continuum Data Reduction - Stage 2 Commissioning | 31% | Mon 1/8/01 | Wed 1/17/01 | High | These are the continuum data reduction tasks and algorithms that will be needed very soon after commissioning starts and, therefore, have a high priority.... | |||
Implement 2-d focus curve fitting | 0% | Mon 1/8/01 | Fri 1/12/01 | High | Aips++,Comm | Continuum routine for fitting a 3-dimensional surface to focus offset measurements. The algorithm will ... | ||
Implement real-time data display and quick reduction | 0% | Thu 1/11/01 | Mon 1/15/01 | High | Aips++,Comm | A Aips++ task that will monitor the ongoing observations and provide data display and rudimentary data reduction. ... | ||
Implement all-sky pointing data reduction | 80% | Thu 1/11/01 | Wed 1/17/01 | High | Aips++,Comm | Continuum routines that will take the log files produced by the 1-d cross-scan pointing algorithm for multiple observations and feed them to an all-sky fitting routine like TPOINT. | ||
Continuum Data Reduction - Final Commissioning | 0% | Mon 1/15/01 | Fri 1/19/01 | Medium | 150 | These are the continuum data reduction tasks and algorithms that will be needed soon after commissioning starts and which have a medium priority.... | ||
Implement Tcal and Tsys data reduction | 0% | Mon 1/15/01 | Mon 1/15/01 | Medium | Aips++,Comm | Measures Tsys from a continuum observation using the noise diode as a temperature reference (See memo by Maddalena). Determines Tcal from a continuum observation of a continuum calibrator and an assumed efficiency (See 140-ft memo by Maddalena). | ||
Implement atmospheric model fitting | 0% | Tue 1/16/01 | Tue 1/16/01 | Medium | Aips++,Comm | Fits to a series of Tant taken at a range of elevations the function described by tipper memo (Maddalena). | ||
Implement 2-d continuum regridding | 0% | Tue 1/16/01 | Wed 1/17/01 | Medium | Aips++,Comm | Continuum routine for regridding 2-dim OTF data onto a user-specified grid.... | ||
Implement continuum OTF mapping data reduction | 0% | Thu 1/18/01 | Fri 1/19/01 | Medium | Aips++,Comm | Continuum routine for reducing a 2-dim OTF data. An example of this would be a beam map. | ||
Implement continuum polarization data reduction | 0% | Thu 1/18/01 | Fri 1/19/01 | Medium | Aips++,Comm | Continuum polarization routines. More details will be established as we learn the polarization of the GBT and its hardware. | ||
Implement beam-switching data reduction | 0% | Thu 1/18/01 | Fri 1/19/01 | Medium | Aips++,Comm | Continuum beam-switching routines. More details will be established when the details of the Q-band tertiary are worked out..... | ||
Continuum Data Reduction - General Use | 0% | Thu 2/22/01 | Thu 7/19/01 | Low | Continuum data reduction tools that are not explicitly needed for commissioning (hence, why they have lower priorities the other data reduction tasks), but which the general user will need. Commissioners will verify the validity of these routines at s... | |||
Implement continuum grid mapping data reduction | 0% | Thu 2/22/01 | Fri 2/23/01 | Low | Aips++,Comm | Continuum routine for reducing a 2-dim grid data set. An example of this would be a beam map. | ||
Implement 5-point continuum pointing data reduction | 0% | Wed 7/18/01 | Thu 7/19/01 | Low | Aips++,Comm | Continuum routine for reducing a 5-point pointing observation. | ||
Implement On-Off data reduction | 0% | Wed 7/18/01 | Thu 7/19/01 | Low | Aips++,Comm | Continuum routine for reducing an on-off observation to determine Tant. | ||
Aips++ Ready for Stage 1 Cont. Commissioning | 0% | Tue 1/2/01 | Tue 1/2/01 | Very High | 181 | Milestone for the continuum routines for the first stage of commissioning. | ||
Aips++ Ready for Stage 2 Cont. Commissioning | 0% | Wed 1/10/01 | Wed 1/10/01 | High | 127 | Milestone for the continuum routines for the second stage of commissioning. | ||
Aips++ Ready for Final Cont. Commissioning | 0% | Fri 1/19/01 | Fri 1/19/01 | Medium | 137 | 310,247,269,279 | Milestone for the continuum routines for the final stage of commissioning. | |
Holographic Data Reduction | 0% | Tue 1/23/01 | Wed 4/4/01 | Medium | 161,180 | Data reduction tools for holographic data. | ||
Verify Holography Filler | 0% | Tue 4/3/01 | Wed 4/4/01 | Medium | Comm,Aips++,Mock | Test Aips++ Filler for the holographic backend.... | ||
Implement Amp/phase, Re/I'm, Illum/Offset plotting tools | 0% | Tue 1/23/01 | Thu 1/25/01 | Medium | Aips++,Comm | Basic Holographic routines for plotting 2-dim holographic images of Amplitudes, phases, Illumination, panel error or offsets, and Real and Imaginary arrays. | ||
Implement real-time data display | 0% | Tue 1/23/01 | Wed 1/24/01 | Medium | Aips++,Comm | Real-time display of a holographic 1-dim strip and for a 2-dim image. Quantities displayed should be relative amplitudes and relative phases. | ||
Implement 2-d Amp/phase holographic regridding | 0% | Tue 1/23/01 | Wed 1/24/01 | Medium | Aips++,Comm | Holographic routines that regrids OTF data taken on a 2-dim Az/El grid onto a user-specified grid. The commissioners will determine the grid using the physical axis offsets of the GBT. | ||
Implement Step 1 instrumental corrections | 0% | Thu 1/25/01 | Mon 1/29/01 | Medium | Aips++,Comm | Holographic routine which corrects relative amplitudes and phases in the image plane for reference horn amplitude patterns and mapping phase patterns. See UniPOPS routines for details. See UniPOPS procedures for details. | ||
Implement 2-d IFFT routines | 0% | Thu 1/25/01 | Thu 1/25/01 | Medium | Aips++,Comm | Converts image plane Amplitude/Phase images to Real/Imaginary and performs 2-dim IFFT. Converts resulting Real/Imaginary aperture plane data into Amplitude/Phase maps. See UniPOPS procedures for details. | ||
Implement Step 2 instrumental corrections | 0% | Fri 1/26/01 | Tue 1/30/01 | Medium | Aips++,Comm | Corrects aperture plane aperture/illumination maps for signal feed amplitude and phase patterns. See UniPOPS procedures for details. | ||
Implement phase-fitting routine | 0% | Thu 2/1/01 | Tue 2/6/01 | Medium | Aips++,Comm | Fits a 2-dim surface to the holography phase map for pointing errors, axial focus offsets, and radial/lateral focus offsets. See UniPOPS procedures for details. | ||
Implement actuator offset routine | 0% | Thu 2/1/01 | Wed 2/7/01 | Medium | Comm,Aips++ | Converts a holographic phase map into physical surface offsets and then into actuator offsets. Details will need to be finalized. | ||
Aips++ Ready for Holography Commissioning | 0% | Wed 4/4/01 | Wed 4/4/01 | Medium | 151 | 247 | Milestone for holographic data reduction for commissioning. | |
Spectral Line Data Reduction | 13% | Wed 1/17/01 | Mon 9/24/01 | Medium | 180 | Data reduction tools explicitly for spectral-line data. | ||
Spectral Line Data Reduction - Commissioning | 23% | Wed 1/17/01 | Tue 5/8/01 | Medium | 120 | 179 | Milestone for the spectral-line routines for commissioning. | |
Verify Aips++ Spectrometer fillers | 0% | Tue 4/10/01 | Fri 4/13/01 | Medium | Comm,Aips++,Mock | Verifies that that Aips++ filler works with on Spectrometer data. | ||
Verify Aips++ Spectral Processor filler | 75% | Sat 5/5/01 | Tue 5/8/01 | Medium | Comm,Aips++,Mock | Verifies that that Aips++ filler works with on Spectral Processor data.... | ||
Implement multi-purpose spectral-line plotting tools | 0% | Fri 2/2/01 | Fri 2/2/01 | Medium | Aips++,Comm | Basic spectral-line routines for plotting a spectrum. The plotting axes can be combinations of any of the following:... | ||
Implement real-time data display | 0% | Thu 2/22/01 | Fri 2/23/01 | Medium | Aips++,Comm | A Aips++ task that will monitor the ongoing observations and provide data display and rudimentary data reduction. One algorithm might perform Sig-Ref/Ref for frequency-, beam-, or polarization-switched data or On-Off/Off for position-switched data.... | ||
Implement 1-d spectral-line regridding | 0% | Wed 1/17/01 | Wed 1/17/01 | Medium | Aips++ | Spectral Lines routine for regridding the frequency or velocity axis onto a user-defined grid.... | ||
Implement Position-switching data reduction | 0% | Mon 1/22/01 | Mon 1/22/01 | Medium | Aips++ | Spectral Lines routines for calibrating position-switched data.... | ||
Implement Frequency-switching data reduction | 0% | Mon 1/22/01 | Mon 1/22/01 | Medium | Aips++ | Spectral Lines routines for calibrating frequency-switched data.... | ||
Implement Beam and Polarization switching data reduction | 0% | Mon 1/22/01 | Mon 1/22/01 | Medium | Aips++ | Spectral Lines routines for calibrating beam- and polarization-switched data.... | ||
Implement Doppler-tracking regridding | 0% | Thu 2/22/01 | Fri 2/23/01 | Medium | Aips++,Comm | Regrids spectral-line data to compensate for Doppler tracking. More details will follow.... | ||
Spectral Line Data Reduction-- General Use | 0% | Wed 7/18/01 | Mon 9/24/01 | Low | Spectral-line data reduction tools that are not explicitly needed for commissioning (hence, why they have lower priorities the other data reduction tasks), but which the general user will need. Commissioners will verify the validity of these routines ... | |||
Implement 5-point spectral-line pointing data reduction | 0% | Wed 7/18/01 | Wed 7/18/01 | Low | Aips++,Comm | Spectral Lines routine for reducing 5-point pointing data. See 12-m data reduction tools in UniPOPS for details. | ||
Implement 3-d spectral-line regridding | 0% | Thu 7/19/01 | Mon 7/23/01 | Low | Aips++,Comm | Spectral Lines routine for regridding data onto a user-defined position and frequency/velocity grid. | ||
Implement spectral-line grid mapping data reduction | 0% | Fri 7/20/01 | Thu 7/26/01 | Low | Aips++,Comm | Spectral Lines routine for turning a spectral-line grid-mapped data set into a data cube. | ||
Implement spectral-line OTF mapping data reduction | 0% | Fri 7/20/01 | Thu 7/26/01 | Low | Aips++,Comm | Spectral Lines routine for turning a spectral-line OTF-mapped data set into a data cube. | ||
Implement polarization data reduction | 0% | Tue 9/18/01 | Mon 9/24/01 | Low | Aips++,Comm | Spectral-line polarization routines. More details will be established as we learn the polarization of the GBT and its hardware.... | ||
Aips++ Ready for Line Commissioning | 0% | Tue 5/8/01 | Tue 5/8/01 | Medium | 163 | 310 | Milestone for the spectral-line routines needed for commissioning. | |
Aips++ Ready for General Use | 0% | Tue 9/25/01 | Tue 9/25/01 | Low | 126,151,162 | Milestone for all data reduction techniques. | ||
Focus tracking | 30% | Thu 2/15/01 | Thu 11/1/01 | Medium | 11,93,148 | Determination of the focus tracking of the telescope. These tasks include:... | ||
Prime Focus focus tracking | 66% | Mon 2/26/01 | Mon 7/9/01 | Medium | 188 | Astronomical measurements from prime focus at 800 MHz to determine focus coefficients and plate scale. This includes testing the stability of the prime focus mount. ... | ||
Servo - Prime Focus | 0% | Wed 7/4/01 | Sat 7/7/01 | Medium | Comm,GBT,Eng | 184 | Hardware tests of servo system. The steps involved are:... | |
Astronomical measurements - PF focus tracking | 94% | Mon 2/26/01 | Mon 7/9/01 | Medium | 183 | Astronomical measurements from prime focus to determine focus coefficients and plate scale. | ||
Measure plate scale | 80% | Mon 2/26/01 | Mon 7/9/01 | Medium | Measurement of the prime focus plate scale. A series of pointing observations with the focus adjusted laterally between observations. | |||
Measure PF focus Track | 100% | Wed 2/28/01 | Mon 3/5/01 | Medium | Comm,GBT | 187 | Astronomical pointing observations at prime focus to determine focus coefficients as a function of elevation. The observing scheme is:... | |
Determine astronomically PF Xt(El), Y(El) | 80% | Thu 3/8/01 | Mon 7/9/01 | Medium | Comm | 186 | Data reduction of the focus/pointing data to determine best gain lateral and axial focus position as a function of telescope elevation. | |
PF Focus track ready | 0% | Mon 7/9/01 | Mon 7/9/01 | Medium | 182 | 218 | Milestone on the completion of PF focus determination. | |
Low frequency (1.4 GHz) Greg. Focus tracking | 100% | Mon 7/23/01 | Fri 8/3/01 | Medium | 94 | 195,198 | Astronomical measurements from Gregorian focus at 1.4 GHz to determine focus coefficients and plate scale. This includes testing the stability of the secondary mount and turret. ... | |
Servo - actuator/turret low freq. | 100% | Mon 7/23/01 | Thu 7/26/01 | Medium | Comm,GBT,Eng | 191 | Hardware tests of servo system. The steps involved are:... | |
Astronomical measurements - low freq. Greg. focus tracking | 100% | Thu 7/26/01 | Fri 8/3/01 | Medium | 190 | Astronomical measurements from Gregorian focus at 1.4 GHz to determine focus coefficients and plate scale. | ||
Measure low-freq. Greg. plate scale | 100% | Tue 7/31/01 | Wed 8/1/01 | Medium | Comm,GBT | Measurement of the prime focus plate scale. A series of pointing observations with the focus adjusted laterally between observations.... | ||
Measure low-freq. Greg. focus track | 100% | Thu 7/26/01 | Tue 7/31/01 | Medium | Comm,GBT | 194 | Astronomical pointing observations at Gregorian focus to determine focus coefficients as a function of elevation. The observing scheme is:... | |
Determine low-freq. Greg. Xt(El), Y(El) | 100% | Wed 8/1/01 | Fri 8/3/01 | Medium | Comm | 193 | Data reduction of the focus/pointing data to determine best gain lateral and axial focus position as a function of telescope elevation.... | |
Preliminary Greg. Focus tracking ready | 100% | Fri 8/3/01 | Fri 8/3/01 | Medium | 189 | 225,247 | Milestone in Gregorian focusing. Telescope can now be focused up to 12 GHz. | |
Metrology determination of Greg. Xt(El,temp), Y(El,temp) | 0% | Thu 2/15/01 | Fri 3/16/01 | Very High | Met,GBT | 198 | Metrology determination of focus coefficients for high frequency observing. More details will follow. | |
Finite element analysis of Greg. Xt(El,temp), Y(El,temp) | 0% | Thu 2/15/01 | Fri 3/16/01 | High | Wells/Schwab | 198 | Finite element analysis of focus as a function of telescope elevation and temperature. | |
High frequency (12 GHz) Greg. focus tracking | 0% | Mon 8/6/01 | Thu 11/1/01 | Medium | 189,197,196 | 207 | Astronomical measurements from Gregorian focus at 12 GHz to determine focus coefficients and plate scale. This includes testing the stability of the secondary mount and turret. ... | |
Servo - actuator/turret High Freq. | 0% | Mon 8/6/01 | Thu 8/9/01 | Medium | Comm,GBT,Eng | 200 | Hardware tests of servo system. The steps involved are:... | |
Astronomical measurements - high freq. Greg focus tracking | 0% | Sun 8/12/01 | Thu 11/1/01 | Medium | 199 | Astronomical measurements from Gregorian focus at 12 GHz to determine focus coefficients and plate scale. | ||
Measure high-freq. Greg. plate scale | 0% | Sun 8/12/01 | Mon 8/13/01 | Medium | Comm,GBT | Measurement of the prime focus plate scale. A series of pointing observations with the focus adjusted laterally between observations.... | ||
Measure high freq. Greg focus track | 0% | Fri 10/26/01 | Mon 10/29/01 | Medium | Comm,GBT,HiFreq | 203 | Astronomical pointing observations at Gregorian focus to determine focus coefficients as a function of elevation. The observing scheme is:... | |
Determine high-freq. Greg. Xt(El), Y(El), and Zt(El) | 0% | Tue 10/30/01 | Thu 11/1/01 | Medium | Comm | 202 | Data reduction of the focus/pointing data to determine best gain lateral and axial focus position as a function of telescope elevation.... | |
Determine Greg. Holography Xt(El). Y(El), and Zt(El) | 0% | Wed 10/24/01 | Fri 10/26/01 | Medium | Comm | 247 | Data reduction of the holographic data to determine focus offsets as a function of telescope elevation. | |
Synthesize focus determinations from all methods | 0% | Mon 8/6/01 | Wed 8/8/01 | Medium | Comm,Wells/Schwab | Combining the results from holography, metrology, finite element analysis, and astronomical measurements into a single set of focus coefficients. | ||
Verification of high-freq. Greg. focus coefficients | 0% | Mon 8/13/01 | Fri 8/17/01 | Medium | Comm,GBT,Wells/Schwab | Astronomical pointing observations at Gregorian focus to determine focus coefficients as a function of elevation. The observing scheme is:... | ||
High Frequency Greg. focus tracking ready | 0% | Thu 11/1/01 | Thu 11/1/01 | Medium | 198 | 233 | Milestone in Gregorian focusing. Telescope can now be focused up to 50 GHz under conditions implied by the previous tasks.... | |
Pointing | 32% | Thu 2/1/01 | Fri 11/23/01 | Medium | Measurements that deal with the pointing of the GBT. These tasks include:... | |||
Telescope servo | 75% | Thu 2/1/01 | Mon 2/5/01 | High | 212,218 | Hardware servo tests whose goal is to determine telescope move times under a wide range of conditions. | ||
Determine telescope acceleration | 75% | Thu 2/1/01 | Sat 2/3/01 | High | Comm,GBT,Eng | Hardware tests of servo system to determine acceleration rates that are practical for observations.... | ||
Determine settling time | 75% | Sat 2/3/01 | Mon 2/5/01 | High | Comm,GBT,Eng | Hardware tests of servo system to determine settling time for the antenna from various velocities and offsets.... | ||
Optical pointing system | 0% | Mon 3/12/01 | Tue 7/3/01 | High | 209,15 | 217 | Using the optical pointing telescope to help determine many of the telescope pointing terms. | |
Measure optical tracking stability | 0% | Thu 3/22/01 | Sat 3/24/01 | High | Comm,GBT | Pointing observation with the optical telescope of a star to determine stability under wind and temperature changes. | ||
Observations of stars | 0% | Mon 3/12/01 | Mon 3/26/01 | High | Comm,GBT | 215 | Pointing observation with the optical telescope toward multiple stars distributed across the sky. | |
Determine optical All-sky coefficients | 0% | Mon 3/26/01 | Mon 4/2/01 | High | Comm | 214 | 216 | Data reduction of the all-sky optical data to determine pointing coefficients. |
Determine Optical/Radio offsets | 0% | Mon 4/2/01 | Tue 7/3/01 | High | Comm,GBT | 215 | Astronomical pointing observations toward a source like 3C274 or the edge of the moon to determine the optical/radio axes offsets and how the offsets change with elevation. | |
Optical Pointing Complete | 0% | Tue 7/3/01 | Tue 7/3/01 | High | 212 | 233 | Milestone in determining pointing coefficients using the optical telescope. | |
Prime focus pointing | 46% | Tue 7/17/01 | Fri 8/17/01 | Medium | 188,209 | 224,225 | Pointing determination from prime focus. This includes testing the stability of the prime focus mount and the determination of pointing coefficients. | |
Measure PF tracking stability | 80% | Tue 7/17/01 | Wed 7/18/01 | Medium | Comm,GBT | 220 | Flux measurements of a source positioned at the half-power point of the telescope's beam. Any fluctuation in the observed flux is a measure of the pointing stability | |
Measure PF short-term stability | 80% | Wed 7/18/01 | Thu 7/19/01 | Medium | Comm,GBT | 219 | 221 | Pointing observation of the same source repeated over and over again. This should measure the short-term stability of the GBT's pointing from Prime Focus. |
Perform PF all-sky map | 50% | Wed 8/1/01 | Mon 8/6/01 | Medium | Comm,GBT | 220 | 222 | Astronomical pointing observations at 800 MHz of sources scattered across the sky. The distribution of sources will be chosen so as to maximize the benefit to fitting the data to the pointing model. |
Determine PF all-sky coefficients | 50% | Thu 8/9/01 | Wed 8/15/01 | Medium | Comm | 221 | 223 | Data reduction of the all-sky PF data to determine all-sky pointing coefficients. |
Verify PF all-sky coefficients | 0% | Wed 8/15/01 | Fri 8/17/01 | Medium | Comm,GBT | 222 | Astronomical pointing observations at 800 MHz of sources scattered across the sky after applying the newly determined pointing coefficients. This should verify that the PF pointing model is appropriate. | |
PF Pointing complete | 0% | Fri 8/17/01 | Fri 8/17/01 | Medium | 218 | Milestone on the completion of PF pointing determination. | ||
Low frequency (1.4 GHz) Greg pointing | 100% | Fri 8/17/01 | Tue 9/4/01 | Medium | 195,218 | 231,233 | Pointing determination from Gregorian focus using a low-frequency receiver. This includes testing the stability of the subreflector and turret and the determination of pointing coefficients. ... | |
Measure Greg. low freq. tracking stability | 100% | Fri 8/17/01 | Mon 8/20/01 | Medium | Comm,GBT | 227 | Flux measurements of a source positioned at the half-power point of the telescope's beam. Any fluctuation in the observed flux is a measure of the pointing stability | |
Measure Greg low freq. short-term stability | 100% | Mon 8/20/01 | Tue 8/21/01 | Medium | Comm,GBT | 226 | 228 | Pointing observation of the same source repeated over and over again. This should measure the short-term stability of the GBT's pointing from Gregorian system.... |
Perform Greg low freq. all-sky map | 100% | Tue 8/21/01 | Sun 8/26/01 | Medium | Comm,GBT | 227 | 229 | Astronomical pointing observations at 1.4 GHz of sources scattered across the sky. The distribution of sources will be chosen so as to maximize the benefit to fitting the data to the pointing model.... |
Determine Greg low freq. all-sky coefficients | 100% | Mon 8/27/01 | Fri 8/31/01 | Medium | Comm | 228 | 230 | Data reduction of the all-sky low-frequency Gregorian data to determine all-sky pointing coefficients. |
Verify Greg low freq. all-sky coefficients | 100% | Sat 9/1/01 | Tue 9/4/01 | Medium | Comm,GBT | 229 | Astronomical pointing observations at 1.4 GHz of sources scattered across the sky after applying the newly determined pointing coefficients. This should verify that the Gregorian pointing model is appropriate.... | |
Preliminary Gregorian pointing complete | 100% | Wed 9/5/01 | Wed 9/5/01 | Medium | 225 | 247,265,243 | Milestone in Gregorian pointing. Telescope can now be used up to 12 GHz. | |
Metrology determination of pointing coefficients | 0% | Sat 7/7/01 | Fri 8/3/01 | Medium | Met,GBT | 233 | Metrology determination of pointing coefficients for high frequency observing. More details will follow. | |
High frequency (12 GHz) Greg pointing | 0% | Thu 11/1/01 | Fri 11/23/01 | Medium | 207,225,217,232 | 239 | Pointing determination from Gregorian focus using a medium/high-frequency receiver. This includes testing the stability of the subreflector and turret and the determination of pointing coefficients. ... | |
Measure Greg high freq. tracking stability | 0% | Thu 11/1/01 | Fri 11/2/01 | Medium | Comm,GBT | 235 | Flux measurements of a source positioned at the half-power point of the telescope's beam. Any fluctuation in the observed flux is a measure of the pointing stability | |
Measure Greg high freq. short-term stability | 0% | Sat 11/3/01 | Mon 11/5/01 | Medium | Comm,GBT | 234 | 236 | Pointing observation of the same source repeated over and over again. This should measure the short-term stability of the GBT's pointing from Gregorian system.... |
Perform Greg high freq. all-sky map | 0% | Fri 11/16/01 | Mon 11/19/01 | Medium | Comm,GBT,HiFreq | 235 | 237 | Astronomical pointing observations at 12 GHz of sources scattered across the sky. The distribution of sources will be chosen so as to maximize the benefit to fitting the data to the pointing model.... |
Determine Greg high freq. all-sky coefficients | 0% | Mon 11/19/01 | Thu 11/22/01 | Medium | Comm | 236 | 238 | Data reduction of the all-sky high-frequency Gregorian data to determine all-sky pointing coefficients. |
Verify Greg high freq. all-sky coefficients | 0% | Thu 11/22/01 | Fri 11/23/01 | Medium | Comm,GBT,HiFreq | 237 | Astronomical pointing observations at 12 GHz of sources scattered across the sky after applying the newly determined pointing coefficients. This should verify that the Gregorian pointing model is appropriate.... | |
Gregorian high frequency pointing complete | 0% | Fri 11/23/01 | Fri 11/23/01 | Medium | 233 | Milestone in Gregorian pointing. Telescope can now be used up to 50 GHz under conditions implied by the previous tasks. | ||
Surface | 4% | Tue 1/2/01 | Sun 5/5/02 | Medium | Tasks for adjusting the surface setting of the GBT for up to 50 GHz observing. The major techniques we will use include:... | |||
Photogrammetry | 24% | Thu 1/25/01 | Fri 9/21/01 | High | 246 | Uses the existing photogrammetry data to alter the actuator settings to their best-fit values. | ||
Determine actuator motions from photogrammetry map | 80% | Thu 1/25/01 | Wed 1/31/01 | High | Comm,Wells/Schwab | 243 | Data reduction of the existing photogrammetry map to determine actuator offsets that would produce the best-fit dish.... | |
Measure 12 GHz photogrammetry efficiency pre- measurements | 0% | Wed 9/5/01 | Mon 9/17/01 | High | Comm,GBT,HiFreq | 242,231 | 244 | Astronomical pointing observations at 12 GHz to determine aperture efficiency as a function of elevation. These measurements are prior to adjusting the surface using the photogrammetry results. This step might be skipped if there already exists a co... |
Prepare for and move actuators according to photogrammetry results | 0% | Tue 9/18/01 | Thu 9/20/01 | Medium | Comm,Wells/Schwab,Eng,M&C | 243 | 245 | Engineering and programming tasks to prepare for moving the surface actuators and the actual moving of the actuators. |
Measure 12-GHz photogrammetry efficiency improvement | 0% | Thu 9/20/01 | Fri 9/21/01 | High | Comm,GBT,HiFreq | 244 | Astronomical pointing observations at 12 GHz to determine aperture efficiency as a function of elevation. These measurements are after the adjustment of the surface using the photogrammetry results and will measure the improvements from moving the ac... | |
1st surface setting | 0% | Fri 9/21/01 | Fri 9/21/01 | High | 241 | Milestone for the first surface setting of the GBT. This should provide a near 12-GHz telescope. | ||
Surface - Gregorian holography | 0% | Mon 9/17/01 | Tue 10/23/01 | Medium | 114,161,195,231,38,150 | 204,256,263,268 | Measures the primary plus secondary surfaces using holography from the secondary focus.... | |
Measure Hol Greg. pointing collimation | 0% | Mon 9/17/01 | Mon 9/17/01 | Medium | Comm,GBT,HiFreq | 249 | Continuum pointing observations toward multiple source at different elevations to determine the three collimation terms in the pointing equation for this receiver. | |
Determine Hol. Greg. axial focus curve | 0% | Mon 9/17/01 | Tue 9/18/01 | Medium | Comm,GBT,HiFreq | 248 | 250 | Continuum pointing observations at multiple focus positions to determine the best position of the optics. |
Measure Hol. Greg. phase stability on calibrator | 0% | Tue 9/18/01 | Tue 9/18/01 | Medium | Comm,GBT,HiFreq | 249 | 251 | Measurements toward 12 GHz geostationary satellites and astronomical methanol masers to determine the phase stability of the holographic system and to estimate the expected accuracy of a holographic map. |
Make Greg. high-resolution map near rigging angle | 0% | Fri 9/21/01 | Mon 10/1/01 | Medium | Comm,GBT,HiFreq | 250 | 252 | Holographic observations of a 12 GHz geostationary satellite positioned near the rigging angle. This is to provide a high resolution map pf the combined primary/secondary surfaces. |
Make Greg. Low-resolution maps at various El | 0% | Mon 10/1/01 | Thu 10/11/01 | Medium | Comm,GBT,HiFreq | 251 | 253 | Holographic observations of strong 12 GHz methanol masers at a range of elevations. This is to provide low resolution maps of the combined primary/secondary surfaces as a function of elevation for determining gravitational deformations.. ... |
Measure Greg 12 GHz Holog efficiency pre- measurements | 0% | Thu 10/11/01 | Fri 10/12/01 | Medium | Comm,GBT,HiFreq | 252 | 254 | Astronomical pointing observations at 12 GHz to determine aperture efficiency as a function of elevation. These measurements are prior to adjusting the surface using the Gregorian holography results. This step might be skipped if there already exist... |
Determine actuator motions from holographic map | 0% | Tue 10/16/01 | Mon 10/22/01 | Medium | Comm | 253 | 255 | Using the low and high resolution holographic maps, determine the amount an actuator will need to be moved to produce a better surface. |
Measure Greg 12-GHz Holog efficiency improvement | 0% | Mon 10/22/01 | Tue 10/23/01 | Medium | Comm,GBT,HiFreq | 254 | Astronomical pointing observations at 12 GHz to determine aperture efficiency as a function of elevation. These measurements are after the adjustment of the surface using the Gregorian holographic results and will measure the improvements from moving... | |
Surface - Prime Focus holography | 0% | Fri 10/26/01 | Sun 5/5/02 | Lowest | 247 | Measures the primary surface using holography from the prime focus. These tasks might be skipped if we deem in not necessary to know what the primary and secondary surfaces are each doing as opposed to what their combination is doing (as measured by G... | ||
Measure Hol PF pointing collimation | 0% | Mon 4/22/02 | Mon 4/22/02 | Lowest | Comm,GBT,HiFreq | 258 | Continuum pointing observations toward multiple source at different elevations to determine the three collimation terms in the pointing equation for this receiver.... | |
Determine Hol PF axial focus curve | 0% | Wed 4/24/02 | Wed 4/24/02 | Lowest | Comm,GBT,HiFreq | 257 | 259 | Continuum pointing observations at multiple focus positions to determine the best position of the optics. |
Measure Hol PF phase stability on calibrator | 0% | Wed 4/24/02 | Thu 4/25/02 | Lowest | Comm,GBT,HiFreq | 258 | 260 | Measurements toward 12 GHz geostationary satellites and astronomical methanol masers to determine the phase stability of the holographic system and to estimate the expected accuracy of a holographic map. Possibly this step can be avoided if the Gregor... |
Make PF High-resolution map near rigging angle | 0% | Thu 4/25/02 | Tue 4/30/02 | Lowest | Comm,GBT,HiFreq | 259 | 261 | Holographic observations of a 12 GHz geostationary satellite positioned near the rigging angle. This is to provide a high resolution map pf the combined primary/secondary surfaces. ... |
Make PF Low-resolution maps at various El | 0% | Tue 4/30/02 | Sun 5/5/02 | Lowest | Comm,GBT,HiFreq | 260 | Holographic observations of strong 12 GHz methanol masers at a range of elevations. This is to provide low resolution maps of the combined primary/secondary surfaces as a function of elevation for determining gravitational deformations.. | |
Determine whether or not to use Prime Focus maps for surface setting | 0% | Fri 10/26/01 | Thu 11/1/01 | Medium | Comm | Using the low and high resolution prime focus holographic maps, determine whether or not it would be advantageous to adjust the primary and secondary for their individual errors instead if adjusting the primary for their combined errors. | ||
2nd surface setting | 0% | Wed 10/24/01 | Wed 10/24/01 | Medium | 247 | 340,397,412 | Milestone for the first surface setting of the GBT. This should provide a near 50-GHz telescope. | |
Finite element analysis | 0% | Tue 1/2/01 | Tue 10/16/01 | Medium | 268 | Finite element analysis of the dish as a function of telescope elevation and temperature. | ||
Measure PF 12 GHz FE efficiency pre-measurements | 0% | Fri 10/12/01 | Mon 10/15/01 | Medium | Comm,GBT,HiFreq | 266,231 | 267 | Astronomical pointing observations at 12 GHz to determine aperture efficiency as a function of elevation. These measurements are prior to adjusting the surface using the finite element analysis results. This step might be skipped if there already ex... |
Determine surface(El,temp) and actuators(El,temp) | 0% | Tue 1/2/01 | Mon 1/15/01 | Medium | Wells/Schwab | 265,267 | Computer modeling of the telescope to determine the affects of elevation and temperature on the telescope's surfaces. Then, determining how one should move the actuators to correct the surface. | |
Measure PF 12-GHz FE efficiency improvement | 0% | Mon 10/15/01 | Tue 10/16/01 | Medium | Comm,GBT,HiFreq | 265,266 | Astronomical pointing observations at 12 GHz to determine aperture efficiency as a function of elevation. These measurements are after the adjustment of the surface using the finite element analysis results and will measure the improvements from movi... | |
Final Surface setting | 0% | Tue 10/23/01 | Tue 10/23/01 | Medium | 247,264 | 269,275,279,354,425 | Milestone for the first surface setting of the GBT. This should provide a 50-GHz telescope and an efficiency curve that is flat with elevation.. | |
Aperture/beam efficiency (f) | 12% | Tue 10/23/01 | Thu 11/22/01 | Medium | 268,150 | Astronomical pointing observations at a set of frequencies to determine aperture efficiency as a function of elevation. Then, beam maps as a function of elevation to determine beam efficiency and beam shape. Assumption is that from Gregorian focus, ... | ||
Measure 8-10 GHz efficiencies | 0% | Tue 10/23/01 | Thu 10/25/01 | Medium | Comm,GBT | Astronomical pointing observations at 8-10 GHz to determine aperture efficiency as a function of elevation. Then, beam maps as a function of elevation to determine beam efficiency and beam shape.... | ||
Measure 12-18 GHz efficiencies | 0% | Mon 10/29/01 | Tue 10/30/01 | Medium | Comm,GBT,HiFreq | Astronomical pointing observations at 12-18 GHz to determine aperture efficiency as a function of elevation. Then, beam maps as a function of elevation to determine beam efficiency and beam shape.... | ||
Measure 18-26 GHz efficiencies | 0% | Fri 11/2/01 | Mon 11/5/01 | Medium | Comm,GBT,HiFreq | Astronomical pointing observations at 18-26 GHz to determine aperture efficiency as a function of elevation. Then, beam maps as a function of elevation to determine beam efficiency and beam shape.... | ||
Measure 40-52 GHz efficiencies | 0% | Mon 11/19/01 | Thu 11/22/01 | Medium | Comm,GBT,HiFreq | 50 | Astronomical pointing observations at 40-52 GHz to determine aperture efficiency as a function of elevation. Then, beam maps as a function of elevation to determine beam efficiency and beam shape.... | |
Measure 0.3 - 8 GHz efficiencies | 20% | Tue 11/6/01 | Fri 11/16/01 | Medium | Comm,GBT | 59 | Astronomical pointing observations at 300-800 MHz to determine aperture efficiency as a function of elevation. Then, beam maps as a function of elevation to determine beam efficiency and beam shape.... | |
Scattering | 0% | Fri 11/23/01 | Tue 11/27/01 | Medium | 268 | Cross scans using the moon as a knife edge . The amount of power and extent of the plateau under these observations can be used to measure the fraction of the surface with small-scale errors and the size scale for these errors. | ||
Measure scattering pattern - 12 GHz | 0% | Fri 11/23/01 | Mon 11/26/01 | Medium | Comm,GBT,HiFreq | Cross scans using the moon as a knife edge at 12 GHz . The amount of power and extent of the plateau under these observations can be used to measure the fraction of the surface with small-scale errors and the size scale for these errors.... | ||
Measure scattering pattern - 26 GHz | 0% | Sat 11/24/01 | Mon 11/26/01 | Medium | Comm,GBT,HiFreq | Cross scans using the moon as a knife edge at 26 GHz . The amount of power and extent of the plateau under these observations can be used to measure the fraction of the surface with small-scale errors and the size scale for these errors.... | ||
Measure scattering pattern - 50 GHz | 0% | Mon 11/26/01 | Tue 11/27/01 | Medium | Comm,GBT,HiFreq | 50 | Cross scans using the moon as a knife edge at 50 GHz . The amount of power and extent of the plateau under these observations can be used to measure the fraction of the surface with small-scale errors and the size scale for these errors.... | |
Outer sidelobes | 0% | Tue 11/27/01 | Thu 12/13/01 | Medium | 268,150 | Near all-sky beam map using the sun as a source to determine outer sidelobes and the large scale surface errors. Measurements need to be made from both prime focus and Gregorian focus due to the differences introduced by the secondary optics. A coupl... | ||
Measure 800 MHz outer sidelobes | 0% | Tue 11/27/01 | Tue 12/4/01 | Medium | Comm,GBT | Near all-sky beam map at 800 MHz using the sun as a source to determine outer sidelobes and the large scale surface errors. | ||
Measure 1 GHz outer sidelobes | 0% | Sun 12/2/01 | Fri 12/7/01 | Medium | Comm,GBT | Near all-sky beam map at 1 GHz using the sun as a source to determine outer sidelobes and the large scale surface errors. ... | ||
Measure 12 GHz outer sidelobes | 0% | Sat 12/8/01 | Thu 12/13/01 | Medium | Comm,GBT,HiFreq | Near all-sky beam map at 12 GHz using the sun as a source to determine outer sidelobes and the large scale surface errors. ... | ||
Astronomical Demonstrations | 24% | Thu 3/8/01 | Thu 2/21/02 | Medium | End-to-end tests confirming readiness of techniques and hardware. Each task demonstrates a particular aspect or type of astronomical observing. These are tasks that require the completion of a large number of predecessor tasks and use a significant f... | |||
Continuum system integration | 57% | Thu 7/19/01 | Tue 9/11/01 | Medium | Tests that show the integration of a large subset of continuum hardware and software. | |||
Measure Prime Focus spillover(El) | 0% | Thu 7/19/01 | Tue 7/24/01 | Medium | Comm,GBT | Determine spillover as a function of elevation from measured Tsys from a prime focus tipping observation. | ||
Measure Gregorian spillover(El) | 75% | Sun 8/26/01 | Thu 8/30/01 | Medium | Comm,GBT | Determine spillover as a function of elevation from measured Tsys from a low-frequency, Gregorian tipping observation. | ||
Demonstrate Continuum OTF mapping | 100% | Sat 9/8/01 | Tue 9/11/01 | Medium | Comm,GBT | A demonstration of an OTF continuum map of a complicated region. | ||
Spectral-Lies system integration | 40% | Thu 3/8/01 | Wed 6/20/01 | Medium | Tests that show the integration of a large subset of spectral-line hardware and software. | |||
Spoilers & baselines | 45% | Thu 3/8/01 | Thu 6/7/01 | Medium | Tests that measure baseline shapes prior and after the installation of antenna spoilers. Requires prime focus and Gregorian receivers and the mockup. Does not require moving the antenna. | |||
Measure baselines pre spoiler installation | 100% | Thu 5/10/01 | Wed 5/16/01 | Medium | Comm,Mock | Spectral-line tests of baseline shapes prior to the installation of spoilers. | ||
Install spoilers | 0% | Thu 3/8/01 | Fri 3/9/01 | Medium | Eng,GBT | Installation of antenna spoilers. | ||
Measure baselines post spoiler installation | 0% | Wed 5/16/01 | Mon 5/21/01 | Medium | Comm,Mock | Spectral-line tests of baseline shapes after the installation of spoilers. | ||
Measure baseline shapes -- Day vs. Night | 50% | Sun 6/3/01 | Thu 6/7/01 | Medium | Comm,Mock | Baseline shapes after spoiler installation. Long integrations that will measure baseline shape at night versus during the day. | ||
Examine I.F. bandpass for birdies | 0% | Wed 6/13/01 | Tue 6/19/01 | Medium | Comm,Mock | Spectral-line checks looking for internally-generated birdies. Requires a broad-band source and mockup but not the antenna. | ||
Measure RFI 300 MHz - 5 GHz | 50% | Sat 6/9/01 | Wed 6/20/01 | Medium | Comm,Mock | Spectral-line checks looking for internally-generated birdies. Requires prime focus, L-band, and C-band receivers and mockup but the antenna need not be moved.... | ||
Spectral Line Demonstration | 0% | Sat 8/18/01 | Fri 9/14/01 | Medium | Demonstration of the spectral-line capabilities of the GBT. | |||
Demonstrate line sensitivity - Strong and weak spectral lines | 0% | Sat 8/18/01 | Tue 8/21/01 | Medium | Comm,GBT | Demonstration of the ability to provide well-calibrated data for both weak and strong narrow spectral lines. Also will determine how well the GBT adheres to the radiometer equation. | ||
Demonstrate wide-weak spectral line sensitivity | 0% | Mon 9/10/01 | Wed 9/12/01 | Medium | Comm,GBT | Demonstrates the ability to detect wide, weak spectral lines in the absence of the standing waves which plague most telescopes. | ||
Demonstrate spectral line OTF mapping | 0% | Thu 8/30/01 | Thu 9/6/01 | Medium | Comm,GBT | End-to-end tests of the ability to make OTF spectral-line maps of a complicated region. | ||
Demonstrate spectral lines with the Spectral Processor in RFI environment | 0% | Wed 9/12/01 | Fri 9/14/01 | Medium | Comm,GBT | Demonstration of the ability of the Spectral Processor to detect lines in a high RFI environment. | ||
VLBI/VLA Demonstration | 0% | Thu 9/13/01 | Mon 2/18/02 | Medium | Demonstration of the VLB capabilities of the GBT. | |||
Measure Green Bank ties | 0% | Thu 9/13/01 | Fri 9/14/01 | Medium | Comm,GBT | Determines the position of the GBT feed with respect to the other Green Bank telescopes. | ||
Demonstrate control of GBT for VLBA | 0% | Sat 10/13/01 | Tue 10/16/01 | Medium | Comm,GBT | Demonstrates the ability to convert a SCHED file into something the GBT can properly run. | ||
Demonstrate S2 VLB recording | 0% | Thu 2/14/02 | Fri 2/15/02 | Low | Comm,GBT | Uses the S2 recording system for VLBA. | ||
Demonstrate VLB dual-recording capabilities | 0% | Fri 2/15/02 | Mon 2/18/02 | Low | Comm,GBT | Uses the two VLB recorders with the GBT for wide-bandwidth observing. | ||
Demonstration of zero-space flux measurements for VLA data | 0% | Fri 12/14/01 | Thu 12/20/01 | Medium | Comm,GBT | Uses the GBT and the VLA to provide high fidelity images over wide fields. | ||
Pulsar Demonstration | 0% | Tue 10/16/01 | Thu 2/21/02 | Medium | Demonstration of the pulsar capabilities of the GBT. | |||
Demonstrate pulsar observing using the Spectrometer | 0% | Tue 10/16/01 | Mon 10/22/01 | Medium | Comm,GBT | Demonstration of the pulsar capabilities of the GBT using the Spectrometer. | ||
Demonstrate pulsar observing using the Spectral Processor | 0% | Mon 2/18/02 | Thu 2/21/02 | Low | Comm,GBT | Demonstration of the pulsar capabilities of the GBT using the Spectral Processor. | ||
Receivers | 6% | Tue 7/3/01 | Wed 4/17/02 | Medium | 28,107,179,150,94 | Receiver commissioning concentrates on critical aspects of a receiver and is independent of any telescope commissioning task. The typical tasks are:... | ||
800 MHz PF | 19% | Tue 7/3/01 | Mon 1/14/02 | Medium | 324 | Commissioning of the 800 MHz section of the PF 1 receiver. | ||
800 MHz pointing/focusing | 0% | Tue 7/3/01 | Tue 12/18/01 | Medium | 316 | Receiver commissioning task concentrating on the individual receivers collimation and axial focus curves (which should be a function of frequency and polarization). | ||
Determine 800 MHz axial focus curve (f,pol) | 0% | Tue 7/3/01 | Thu 7/5/01 | Medium | Comm,GBT,Eng | Continuum pointing observations at multiple focus positions to determine axial focus as a function of polarization and frequency. | ||
Measure 800 MHz collimation | 0% | Sun 12/16/01 | Tue 12/18/01 | Medium | Comm,GBT,Eng | Continuum pointing observations toward multiple source at different elevations to determine receiver's pointing collimation. | ||
Determine 800 MHz polarization-switching blanking | 0% | Thu 10/25/01 | Fri 10/26/01 | Medium | Comm,GBT,Eng | Hardware tests to determine the optimum hardware parameters for the beam-switch/polarization switch. | ||
800 MHz calibration observations | 21% | Tue 12/18/01 | Thu 1/3/02 | Medium | 312 | 322 | Observations with the GBT for receiver commissioning. | |
Observe 800 MHz gain calibrators(f,pol) | 0% | Tue 12/18/01 | Fri 12/21/01 | Medium | Comm,GBT,Eng | Multiple continuum observations of multiple calibrators at multiple frequencies with all polarizations. | ||
Measure 800 MHz inner beam maps(f,pol) | 50% | Thu 12/27/01 | Mon 12/31/01 | Medium | Comm,GBT,Eng | Continuum mapping of the inner beam of the telescope which should be influenced by the receiver feed's illumination pattern. Illumination might be dependent on frequency and polarization. | ||
Measure 800 MHz bandpass(f.pol) and baselines(f,pol) | 0% | Fri 12/21/01 | Wed 12/26/01 | Medium | Comm,GBT,Eng | Spectral-line observations toward blank sky (zenith) across the receivers bandpass in all polarizations looking for bandpass and baseline shapes.... | ||
Measure 800 MHz beam squint(f) | 80% | Tue 1/1/02 | Thu 1/3/02 | Medium | Comm,GBT,Eng | Polarization cross continuum measurements of an unpolarized source at various frequencies in all polarizations to determine beam squint. | ||
Determine 800 MHz polarization hybrid settings(f) | 0% | Mon 12/24/01 | Wed 12/26/01 | Medium | Comm,GBT,Eng | Continuum cross-scan measurements toward an unpolarized source to determine the optimum setting of the polarization hybrid as a function of frequency. | ||
800 MHz calibration data reduction | 50% | Mon 1/7/02 | Mon 1/14/02 | Medium | 316 | Data reduction of the gain calibration observations | ||
Determine 800 MHz Tcal(f,pol) and Tsys(f,pol) | 50% | Mon 1/7/02 | Mon 1/14/02 | Medium | Comm | Data reduction of calibrator data to determine system temperature and noise diode value as a function of frequency for all polarizations. Attempt to rectify any differences between values supplied by engineer and that determined on astronomical sources. | ||
PF 800 MHz ready for experiments | 0% | Mon 1/14/02 | Mon 1/14/02 | Medium | 311 | 453 | Milestone indicating that the 800 MHz PF receiver is ready for general use.... | |
1-2 GHz | 0% | Thu 12/13/01 | Thu 1/17/02 | Medium | 339 | Commissioning of the 1-2 GHz receiver. | ||
1-2 GHz pointing/focusing | 0% | Thu 12/13/01 | Tue 1/1/02 | Medium | 330 | Receiver commissioning task concentrating on the individual receivers collimation and axial focus curves (which should be a function of frequency and polarization).... | ||
Determine 1-2 GHz axial focus curve (f,pol) | 0% | Sat 12/29/01 | Mon 12/31/01 | Medium | Comm,GBT,Eng | Continuum pointing observations at multiple focus positions to determine axial focus as a function of polarization and frequency.... | ||
Measure 1-2 GHz MHz collimation | 0% | Thu 12/13/01 | Fri 12/14/01 | Medium | Comm,GBT,Eng | Continuum pointing observations toward multiple source at different elevations to determine receiver's pointing collimation. | ||
Determine 1-2 GHz polarization-switching blanking | 0% | Mon 12/31/01 | Tue 1/1/02 | Medium | Comm,GBT,Eng | Hardware tests to determine the optimum hardware parameters for the beam-switch/polarization switch. | ||
1-2 GHz calibration observations | 0% | Thu 1/3/02 | Sat 1/12/02 | Medium | 326 | 336 | Observations with the GBT for receiver commissioning. | |
Observe 1-2 GHz gain calibrators(f,pol) | 0% | Thu 1/3/02 | Mon 1/7/02 | Medium | Comm,GBT,Eng | Multiple continuum observations of multiple calibrators at multiple frequencies with all polarizations. | ||
Measure 1-2 GHz inner beam maps(f,pol) | 0% | Sat 1/5/02 | Mon 1/7/02 | Medium | Comm,GBT,Eng | Continuum mapping of the inner beam of the telescope which should be influenced by the receiver feed's illumination pattern. Illumination might be dependent on frequency and polarization.... | ||
Measure 1-2 GHz bandpass(f.pol) and baselines(f,pol) | 0% | Tue 1/8/02 | Thu 1/10/02 | Medium | Comm,GBT,Eng | Spectral-line observations toward blank sky (zenith) across the receivers bandpass in all polarizations looking for bandpass and baseline shapes.... | ||
Measure 1-2 GHz beam squint(f) | 0% | Thu 1/10/02 | Fri 1/11/02 | Medium | Comm,GBT,Eng | Polarization cross continuum measurements of an unpolarized source at various frequencies in all polarizations to determine beam squint.... | ||
Determine 1-2 GHz polarization hybrid settings(f) | 0% | Fri 1/11/02 | Sat 1/12/02 | Medium | Comm,GBT,Eng | Continuum cross-scan measurements toward an unpolarized source to determine the optimum setting of the polarization hybrid as a function of frequency.... | ||
1-2 GHz calibration data reduction | 0% | Mon 1/14/02 | Thu 1/17/02 | Medium | 330 | Data reduction of the gain calibration observations | ||
Determine 1-2 GHz Tcal(f,pol) and Tsys(f,pol) | 0% | Mon 1/14/02 | Wed 1/16/02 | Medium | Comm | Data reduction of calibrator data to determine system temperature and noise diode value as a function of frequency for all polarizations. Attempt to rectify any differences between values supplied by engineer and that determined on astronomical sourc... | ||
Determine 1-2 GHz atmospheric Tau(f) | 0% | Mon 1/14/02 | Thu 1/17/02 | Medium | Comm | Continuum measurements of calibrator at different elevations for determination of atmospheric opacity across the receiver's bandpass. | ||
1-2 GHz ready for experiments | 0% | Thu 1/17/02 | Thu 1/17/02 | Medium | 325 | 453 | Milestone indicating that the 1-2 GHz receiver is ready for general use.... | |
12-18 GHz | 0% | Fri 12/7/01 | Thu 1/24/02 | Medium | 263 | 353 | Commissioning of the 12-18 GHz receiver. | |
12-18 GHz pointing/focusing | 0% | Fri 12/7/01 | Sat 1/19/02 | Medium | 345 | Receiver commissioning task concentrating on the individual receivers collimation and axial focus curves (which should be a function of frequency and polarization).... | ||
Determine 12-18 GHz axial focus curve (f,pol) | 0% | Thu 1/17/02 | Fri 1/18/02 | Medium | Comm,GBT,Eng,HiFreq | Continuum pointing observations at multiple focus positions to determine axial focus as a function of polarization and frequency.... | ||
Measure 12-18 GHz MHz collimation | 0% | Fri 1/18/02 | Sat 1/19/02 | Medium | Comm,GBT,Eng,HiFreq | Continuum pointing observations toward multiple source at different elevations to determine receiver's pointing collimation. | ||
Determine 12-18 GHz beam-switching blanking | 0% | Fri 12/7/01 | Mon 12/10/01 | Medium | Comm,GBT,Eng | Hardware tests to determine the optimum hardware parameters for the beam-switch/polarization switch. | ||
12-18 GHz calibration observations | 0% | Sat 1/19/02 | Thu 1/24/02 | Medium | 341 | 350 | Observations with the GBT for receiver commissioning. | |
Observe 12-18 GHz gain calibrators(f,pol) | 0% | Sat 1/19/02 | Mon 1/21/02 | Medium | Comm,GBT,Eng,HiFreq | Multiple continuum observations of multiple calibrators at multiple frequencies with all polarizations. | ||
Measure 12-18 GHz inner beam maps(f,pol) | 0% | Sun 1/20/02 | Mon 1/21/02 | Medium | Comm,GBT,Eng,HiFreq | Continuum mapping of the inner beam of the telescope which should be influenced by the receiver feed's illumination pattern. Illumination might be dependent on frequency and polarization.... | ||
Measure 12-18 GHz bandpass(f.pol) and baselines(f,pol) | 0% | Tue 1/22/02 | Wed 1/23/02 | Medium | Comm,GBT,Eng,HiFreq | Spectral-line observations toward blank sky (zenith) across the receivers bandpass in all polarizations looking for bandpass and baseline shapes.... | ||
Measure 12-18 GHz beam squint(f) | 0% | Wed 1/23/02 | Thu 1/24/02 | Medium | Comm,GBT,Eng,HiFreq | Polarization cross continuum measurements of an unpolarized source at various frequencies in all polarizations to determine beam squint.... | ||
12-18 GHz calibration data reduction | 0% | Thu 1/24/02 | Thu 1/24/02 | Medium | 345 | Data reduction of the gain calibration observations | ||
Determine 12-18 GHz Tcal(f,pol) and Tsys(f,pol) | 0% | Thu 1/24/02 | Thu 1/24/02 | Medium | Comm | Data reduction of calibrator data to determine system temperature and noise diode value as a function of frequency for all polarizations. Attempt to rectify any differences between values supplied by engineer and that determined on astronomical sourc... | ||
Determine 12-18 GHz atmospheric Tau(f) | 0% | Thu 1/24/02 | Thu 1/24/02 | Medium | Comm | Continuum measurements of calibrator at different elevations for determination of atmospheric opacity across the receiver's bandpass.... | ||
12-18 GHz ready for experiments | 0% | Thu 1/24/02 | Thu 1/24/02 | Medium | 340 | 453 | Milestone indicating that the 12-18 GHz receiver is ready for general use.... | |
40-52 GHz | 0% | Fri 1/25/02 | Mon 2/11/02 | Medium | 54,268 | 367 | Commissioning of the 40-52 GHz receiver. | |
40-52 GHz pointing/focusing | 0% | Fri 1/25/02 | Wed 1/30/02 | Medium | 359 | Receiver commissioning task concentrating on the individual receivers collimation and axial focus curves (which should be a function of frequency and polarization).... | ||
Determine 40-52 GHz axial focus curve (f,pol) | 0% | Fri 1/25/02 | Sun 1/27/02 | Medium | Comm,GBT,Eng,HiFreq | Continuum pointing observations at multiple focus positions to determine axial focus as a function of polarization and frequency.... | ||
Measure 40-52 GHz MHz collimation | 0% | Sun 1/27/02 | Mon 1/28/02 | Medium | Comm,GBT,Eng,HiFreq | Continuum pointing observations toward multiple source at different elevations to determine receiver's pointing collimation. | ||
Determine 40-52 GHz beam-switching/tertiary blanking | 0% | Mon 1/28/02 | Wed 1/30/02 | Medium | Comm,GBT,Eng | Hardware tests to determine the optimum hardware parameters for the beam-switch/polarization switch. | ||
40-52 GHz calibration observations | 0% | Thu 1/31/02 | Fri 2/8/02 | Medium | 355 | 364 | Observations with the GBT for receiver commissioning. | |
Observe 40-52 GHz gain calibrators(f,pol) | 0% | Thu 1/31/02 | Sun 2/3/02 | Medium | Comm,GBT,Eng,HiFreq | Multiple continuum observations of multiple calibrators at multiple frequencies with all polarizations. | ||
Measure 40-52 GHz inner beam maps(f,pol) | 0% | Sun 2/3/02 | Tue 2/5/02 | Medium | Comm,GBT,Eng,HiFreq | Continuum mapping of the inner beam of the telescope which should be influenced by the receiver feed's illumination pattern. Illumination might be dependent on frequency and polarization.... | ||
Measure 40-52 GHz bandpass(f.pol) and baselines(f,pol) | 0% | Tue 2/5/02 | Thu 2/7/02 | Medium | Comm,GBT,Eng,HiFreq | Spectral-line observations toward blank sky (zenith) across the receivers bandpass in all polarizations looking for bandpass and baseline shapes.... | ||
Measure 40-52 GHz beam squint(f) | 0% | Thu 2/7/02 | Fri 2/8/02 | Medium | Comm,GBT,Eng,HiFreq | Polarization cross continuum measurements of an unpolarized source at various frequencies in all polarizations to determine beam squint.... | ||
40-52 GHz calibration data reduction | 0% | Fri 2/8/02 | Mon 2/11/02 | Medium | 359 | Data reduction of the gain calibration observations | ||
Determine 40-52 GHz Tcal(f,pol) and Tsys(f,pol) | 0% | Fri 2/8/02 | Mon 2/11/02 | Medium | Comm | Data reduction of calibrator data to determine system temperature and noise diode value as a function of frequency for all polarizations. Attempt to rectify any differences between values supplied by engineer and that determined on astronomical sourc... | ||
Determine 40-52 GHz atmospheric Tau(f) | 0% | Fri 2/8/02 | Mon 2/11/02 | Medium | Comm | Continuum measurements of calibrator at different elevations for determination of atmospheric opacity across the receiver's bandpass.... | ||
40-52 GHz ready for experiments | 0% | Mon 2/11/02 | Mon 2/11/02 | Medium | 354 | 453 | Milestone indicating that the 40-52 GHz receiver is ready for general use.... | |
300 MHz PF | 0% | Tue 1/29/02 | Thu 2/28/02 | Low | 381 | Commissioning of the 300 MHz section of the PF 1 receiver. | ||
300 MHz pointing/focusing | 0% | Tue 1/29/02 | Fri 2/22/02 | Low | 373 | Receiver commissioning task concentrating on the individual receivers collimation and axial focus curves (which should be a function of frequency and polarization).... | ||
Determine 300 MHz axial focus curve (f,pol) | 0% | Wed 2/20/02 | Thu 2/21/02 | Low | Comm,GBT,Eng | Continuum pointing observations at multiple focus positions to determine axial focus as a function of polarization and frequency.... | ||
Measure 300 MHz collimation | 0% | Thu 2/21/02 | Fri 2/22/02 | Low | Comm,GBT,Eng | Continuum pointing observations toward multiple source at different elevations to determine receiver's pointing collimation. | ||
Determine 300 MHz polarization-switching blanking | 0% | Tue 1/29/02 | Wed 1/30/02 | Medium | Comm,GBT,Eng | Hardware tests to determine the optimum hardware parameters for the beam-switch/polarization switch. | ||
300 MHz calibration observations | 0% | Fri 2/22/02 | Thu 2/28/02 | Low | 369 | 379 | Observations with the GBT for receiver commissioning. | |
Observe 300 MHz gain calibrators(f,pol) | 0% | Fri 2/22/02 | Sat 2/23/02 | Low | Comm,GBT,Eng | Multiple continuum observations of multiple calibrators at multiple frequencies with all polarizations. | ||
Measure 300 MHz inner beam maps(f,pol) | 0% | Sat 2/23/02 | Mon 2/25/02 | Low | Comm,GBT,Eng | Continuum mapping of the inner beam of the telescope which should be influenced by the receiver feed's illumination pattern. Illumination might be dependent on frequency and polarization.... | ||
Measure 300 MHz bandpass(f.pol) and baselines(f,pol) | 0% | Mon 2/25/02 | Tue 2/26/02 | Low | Comm,GBT,Eng | Spectral-line observations toward blank sky (zenith) across the receivers bandpass in all polarizations looking for bandpass and baseline shapes.... | ||
Measure 300 MHz beam squint(f) | 0% | Tue 2/26/02 | Wed 2/27/02 | Low | Comm,GBT,Eng | Polarization cross continuum measurements of an unpolarized source at various frequencies in all polarizations to determine beam squint.... | ||
Determine 300 MHz polarization hybrid settings(f) | 0% | Wed 2/27/02 | Thu 2/28/02 | Low | Comm,GBT,Eng | Continuum cross-scan measurements toward an unpolarized source to determine the optimum setting of the polarization hybrid as a function of frequency.... | ||
300 MHz Calibration Data Reduction | 0% | Thu 2/28/02 | Thu 2/28/02 | Low | 373 | Data reduction of the gain calibration observations | ||
Determine 300 MHz Tcal(f,pol) and Tsys(f,pol) | 0% | Thu 2/28/02 | Thu 2/28/02 | Low | Comm | Data reduction of calibrator data to determine system temperature and noise diode value as a function of frequency for all polarizations. Attempt to rectify any differences between values supplied by engineer and that determined on astronomical sourc... | ||
PF 300 MHz ready for experiments | 0% | Thu 2/28/02 | Thu 2/28/02 | Low | 368 | 453 | Milestone indicating that the 300 MHz PF receiver is ready for general use.... | |
2-3 GHz | 29% | Wed 1/30/02 | Fri 3/15/02 | Low | 396 | Commissioning of the 2-3 GHz receiver. | ||
2-3 GHz pointing/focusing | 0% | Wed 1/30/02 | Sat 3/2/02 | Low | 387 | Receiver commissioning task concentrating on the individual receivers collimation and axial focus curves (which should be a function of frequency and polarization).... | ||
Determine 2-3 GHz axial focus curve (f,pol) | 0% | Thu 2/28/02 | Fri 3/1/02 | Low | Comm,GBT,Eng | Continuum pointing observations at multiple focus positions to determine axial focus as a function of polarization and frequency.... | ||
Measure 2-3 GHz MHz collimation | 0% | Fri 3/1/02 | Sat 3/2/02 | Low | Comm,GBT,Eng | Continuum pointing observations toward multiple source at different elevations to determine receiver's pointing collimation. | ||
Determine 2-3 GHz polarization-switching blanking | 0% | Wed 1/30/02 | Thu 1/31/02 | Medium | Comm,GBT,Eng | Hardware tests to determine the optimum hardware parameters for the beam-switch/polarization switch. | ||
2-3 GHz calibration observations | 40% | Sat 3/2/02 | Thu 3/14/02 | Low | 383 | 393 | Observations with the GBT for receiver commissioning. | |
Observe 2-3 GHz gain calibrators(f,pol) | 50% | Sat 3/9/02 | Mon 3/11/02 | Low | Comm,GBT,Eng | Multiple continuum observations of multiple calibrators at multiple frequencies with all polarizations. | ||
Measure 2-3 GHz inner beam maps(f,pol) | 80% | Sun 3/10/02 | Mon 3/11/02 | Low | Comm,GBT,Eng | Continuum mapping of the inner beam of the telescope which should be influenced by the receiver feed's illumination pattern. Illumination might be dependent on frequency and polarization.... | ||
Measure 2-3 GHz bandpass(f.pol) and baselines(f,pol) | 0% | Sat 3/2/02 | Mon 3/4/02 | Low | Comm,GBT,Eng | Spectral-line observations toward blank sky (zenith) across the receivers bandpass in all polarizations looking for bandpass and baseline shapes.... | ||
Measure 2-3 GHz beam squint(f) | 80% | Wed 3/13/02 | Thu 3/14/02 | Low | Comm,GBT,Eng | Polarization cross continuum measurements of an unpolarized source at various frequencies in all polarizations to determine beam squint.... | ||
Determine 2-3 GHz polarization hybrid settings(f) | 0% | Sun 3/3/02 | Mon 3/4/02 | Low | Comm,GBT,Eng | Continuum cross-scan measurements toward an unpolarized source to determine the optimum setting of the polarization hybrid as a function of frequency.... | ||
2-3 GHz calibration data reduction | 50% | Fri 3/15/02 | Fri 3/15/02 | Low | 387 | Data reduction of the gain calibration observations | ||
Determine 2-3 GHz Tcal(f,pol) and Tsys(f,pol) | 50% | Fri 3/15/02 | Fri 3/15/02 | Low | Comm | Data reduction of calibrator data to determine system temperature and noise diode value as a function of frequency for all polarizations. Attempt to rectify any differences between values supplied by engineer and that determined on astronomical sourc... | ||
Determine 2-3 GHz atmospheric Tau(f) | 50% | Fri 3/15/02 | Fri 3/15/02 | Low | Comm | Continuum measurements of calibrator at different elevations for determination of atmospheric opacity across the receiver's bandpass.... | ||
2-3 GHz ready for experiments | 0% | Fri 3/15/02 | Fri 3/15/02 | Low | 382 | 453 | Milestone indicating that the 2-3 GHz receiver is ready for general use.... | |
4-6 GHz | 0% | Tue 2/12/02 | Tue 3/19/02 | Low | 263 | 411 | Commissioning of the 4-6 GHz receiver. | |
4-6 GHz pointing/focusing | 0% | Tue 2/12/02 | Thu 3/7/02 | Low | 402 | Receiver commissioning task concentrating on the individual receivers collimation and axial focus curves (which should be a function of frequency and polarization).... | ||
Determine 4-6 GHz axial focus curve (f,pol) | 0% | Tue 3/5/02 | Wed 3/6/02 | Low | Comm,GBT,Eng | Continuum pointing observations at multiple focus positions to determine axial focus as a function of polarization and frequency.... | ||
Measure 4-6 GHz MHz collimation | 0% | Wed 3/6/02 | Thu 3/7/02 | Low | Comm,GBT,Eng | Continuum pointing observations toward multiple source at different elevations to determine receiver's pointing collimation. | ||
Determine 4-6 GHz polarization-switching blanking | 0% | Tue 2/12/02 | Wed 2/13/02 | Medium | Comm,GBT,Eng | Hardware tests to determine the optimum hardware parameters for the beam-switch/polarization switch. | ||
4-6 GHz calibration observations | 0% | Thu 3/7/02 | Tue 3/19/02 | Low | 398 | 408 | Observations with the GBT for receiver commissioning. | |
Observe 4-6 GHz gain calibrators(f,pol) | 0% | Thu 3/7/02 | Fri 3/8/02 | Low | Comm,GBT,Eng | Multiple continuum observations of multiple calibrators at multiple frequencies with all polarizations. | ||
Measure 4-6 GHz inner beam maps(f,pol) | 0% | Fri 3/8/02 | Sat 3/9/02 | Low | Comm,GBT,Eng | Continuum mapping of the inner beam of the telescope which should be influenced by the receiver feed's illumination pattern. Illumination might be dependent on frequency and polarization.... | ||
Measure 4-6 GHz bandpass(f.pol) and baselines(f,pol) | 0% | Tue 3/12/02 | Wed 3/13/02 | Low | Comm,GBT,Eng | Spectral-line observations toward blank sky (zenith) across the receivers bandpass in all polarizations looking for bandpass and baseline shapes.... | ||
Measure 4-6 GHz beam squint(f) | 0% | Thu 3/14/02 | Fri 3/15/02 | Low | Comm,GBT,Eng | Polarization cross continuum measurements of an unpolarized source at various frequencies in all polarizations to determine beam squint.... | ||
Determine 4-6 GHz polarization hybrid settings(f) | 0% | Mon 3/18/02 | Tue 3/19/02 | Low | Comm,GBT,Eng | Continuum cross-scan measurements toward an unpolarized source to determine the optimum setting of the polarization hybrid as a function of frequency.... | ||
4-6 GHz calibration data reduction | 0% | Tue 3/19/02 | Tue 3/19/02 | Low | 402 | Data reduction of the gain calibration observations | ||
Determine 4-6 GHz Tcal(f,pol) and Tsys(f,pol) | 0% | Tue 3/19/02 | Tue 3/19/02 | Low | Comm | Data reduction of calibrator data to determine system temperature and noise diode value as a function of frequency for all polarizations. Attempt to rectify any differences between values supplied by engineer and that determined on astronomical sourc... | ||
Determine 4-6 GHz atmospheric Tau(f) | 0% | Tue 3/19/02 | Tue 3/19/02 | Low | Comm | Continuum measurements of calibrator at different elevations for determination of atmospheric opacity across the receiver's bandpass.... | ||
4-6 GHz ready for experiments | 0% | Tue 3/19/02 | Tue 3/19/02 | Low | 397 | 453 | Milestone indicating that the 4-6 GHz receiver is ready for general use.... | |
8-10 GHz | 0% | Wed 3/20/02 | Wed 3/27/02 | Low | 263 | 424 | Commissioning of the 8-10 GHz receiver. | |
8-10 GHz pointing/focusing | 0% | Wed 3/20/02 | Fri 3/22/02 | Low | 416 | Receiver commissioning task concentrating on the individual receivers collimation and axial focus curves (which should be a function of frequency and polarization).... | ||
Determine 8-10 GHz axial focus curve (f,pol) | 0% | Wed 3/20/02 | Thu 3/21/02 | Low | Comm,GBT,Eng | Continuum pointing observations at multiple focus positions to determine axial focus as a function of polarization and frequency.... | ||
Measure 8-10 GHz MHz collimation | 0% | Thu 3/21/02 | Fri 3/22/02 | Low | Comm,GBT,Eng | Continuum pointing observations toward multiple source at different elevations to determine receiver's pointing collimation. | ||
8-10 GHz calibration observations | 0% | Fri 3/22/02 | Wed 3/27/02 | Low | 413 | 421 | Observations with the GBT for receiver commissioning. | |
Observe 8-10 GHz gain calibrators(f,pol) | 0% | Fri 3/22/02 | Sat 3/23/02 | Low | Comm,GBT,Eng | Multiple continuum observations of multiple calibrators at multiple frequencies with all polarizations. | ||
Measure 8-10 GHz inner beam maps(f,pol) | 0% | Sat 3/23/02 | Mon 3/25/02 | Low | Comm,GBT,Eng | Continuum mapping of the inner beam of the telescope which should be influenced by the receiver feed's illumination pattern. Illumination might be dependent on frequency and polarization.... | ||
Measure 8-10 GHz bandpass(f.pol) and baselines(f,pol) | 0% | Mon 3/25/02 | Tue 3/26/02 | Low | Comm,GBT,Eng | Spectral-line observations toward blank sky (zenith) across the receivers bandpass in all polarizations looking for bandpass and baseline shapes.... | ||
Measure 8-10 GHz beam squint(f) | 0% | Tue 3/26/02 | Wed 3/27/02 | Low | Comm,GBT,Eng | Polarization cross continuum measurements of an unpolarized source at various frequencies in all polarizations to determine beam squint.... | ||
8-10 GHz calibration data reduction | 0% | Wed 3/27/02 | Wed 3/27/02 | Low | 416 | Data reduction of the gain calibration observations | ||
Determine 8-10 GHz Tcal(f,pol) and Tsys(f,pol) | 0% | Wed 3/27/02 | Wed 3/27/02 | Low | Comm | Data reduction of calibrator data to determine system temperature and noise diode value as a function of frequency for all polarizations. Attempt to rectify any differences between values supplied by engineer and that determined on astronomical sourc... | ||
Determine 8-10 GHz atmospheric Tau(f) | 0% | Wed 3/27/02 | Wed 3/27/02 | Low | Comm | Continuum measurements of calibrator at different elevations for determination of atmospheric opacity across the receiver's bandpass.... | ||
8-10 GHz Ready for Experiments | 0% | Wed 3/27/02 | Wed 3/27/02 | Low | 412 | 453 | Milestone indicating that the 8-10 GHz receiver is ready for general use.... | |
18-26 GHz | 0% | Thu 3/28/02 | Wed 4/10/02 | Low | 268 | 438 | Commissioning of the 18-26 GHz receiver. | |
18-26 GHz Pointing/Focusing | 0% | Thu 3/28/02 | Mon 4/1/02 | Low | 430 | Receiver commissioning task concentrating on the individual receivers collimation and axial focus curves (which should be a function of frequency and polarization).... | ||
Determine 18-26 GHz axial focus curve (f,pol) | 0% | Thu 3/28/02 | Fri 3/29/02 | Low | Comm,GBT,Eng,HiFreq | Continuum pointing observations at multiple focus positions to determine axial focus as a function of polarization and frequency.... | ||
Measure 18-26 GHz MHz collimation | 0% | Fri 3/29/02 | Sat 3/30/02 | Low | Comm,GBT,Eng,HiFreq | Continuum pointing observations toward multiple source at different elevations to determine receiver's pointing collimation. | ||
Determine 18-26 GHz beam-switching blanking | 0% | Sat 3/30/02 | Mon 4/1/02 | Low | Comm,GBT,Eng | Hardware tests to determine the optimum hardware parameters for the beam-switch/polarization switch. | ||
18-26 GHz calibration observations | 0% | Tue 4/2/02 | Mon 4/8/02 | Low | 426 | 435 | Observations with the GBT for receiver commissioning. | |
Observe 18-26 GHz gain calibrators(f,pol) | 0% | Tue 4/2/02 | Thu 4/4/02 | Low | Comm,GBT,Eng,HiFreq | Multiple continuum observations of multiple calibrators at multiple frequencies with all polarizations. | ||
Measure 18-26 GHz inner beam maps(f,pol) | 0% | Thu 4/4/02 | Fri 4/5/02 | Low | Comm,GBT,Eng,HiFreq | Continuum mapping of the inner beam of the telescope which should be influenced by the receiver feed's illumination pattern. Illumination might be dependent on frequency and polarization.... | ||
Measure 18-26 GHz bandpass(f.pol) and baselines(f,pol) | 0% | Fri 4/5/02 | Sat 4/6/02 | Low | Comm,GBT,Eng,HiFreq | Spectral-line observations toward blank sky (zenith) across the receivers bandpass in all polarizations looking for bandpass and baseline shapes.... | ||
Measure 18-26 GHz beam squint(f) | 0% | Sat 4/6/02 | Mon 4/8/02 | Low | Comm,GBT,Eng,HiFreq | Polarization cross continuum measurements of an unpolarized source at various frequencies in all polarizations to determine beam squint.... | ||
18-26 GHz calibration data reduction | 0% | Tue 4/9/02 | Wed 4/10/02 | Low | 430 | Data reduction of the gain calibration observations | ||
Determine 18-26 GHz Tcal(f,pol) and Tsys(f,pol) | 0% | Tue 4/9/02 | Wed 4/10/02 | Low | Comm | Data reduction of calibrator data to determine system temperature and noise diode value as a function of frequency for all polarizations. Attempt to rectify any differences between values supplied by engineer and that determined on astronomical sourc... | ||
Determine 18-26 GHz atmospheric Tau(f) | 0% | Tue 4/9/02 | Wed 4/10/02 | Low | Comm | Continuum measurements of calibrator at different elevations for determination of atmospheric opacity across the receiver's bandpass.... | ||
18-26 GHz ready for experiments | 0% | Wed 4/10/02 | Wed 4/10/02 | Low | 425 | 453 | Milestone indicating that the 18-26 GHz receiver is ready for general use.... | |
Prime Focus 2 | 0% | Wed 2/13/02 | Wed 4/17/02 | Low | 59 | 452 | Commissioning of the Prime Focus 2 receiver. This task needs to be delayed until the receiver is finished. | |
Prime Focus 2 pointing/focusing | 0% | Wed 2/13/02 | Tue 4/9/02 | Low | 444 | Receiver commissioning task concentrating on the individual receivers collimation and axial focus curves (which should be a function of frequency and polarization).... | ||
Determine PF2 axial focus curve (f,pol) | 0% | Mon 4/1/02 | Tue 4/2/02 | Low | Comm,GBT,Eng | Continuum pointing observations at multiple focus positions to determine axial focus as a function of polarization and frequency.... | ||
Measure PF2 MHz collimation | 0% | Mon 4/8/02 | Tue 4/9/02 | Low | Comm,GBT,Eng | Continuum pointing observations toward multiple source at different elevations to determine receiver's pointing collimation. | ||
Determine PF2 polarization-switching blanking | 0% | Wed 2/13/02 | Thu 2/14/02 | Medium | Comm,GBT,Eng | Hardware tests to determine the optimum hardware parameters for the beam-switch/polarization switch. | ||
PF2 calibration observations | 0% | Thu 4/11/02 | Wed 4/17/02 | Low | 440 | 450 | Observations with the GBT for receiver commissioning. | |
Observe PF2 gain calibrators(f,pol) | 0% | Thu 4/11/02 | Fri 4/12/02 | Low | Comm,GBT,Eng | Multiple continuum observations of multiple calibrators at multiple frequencies with all polarizations. | ||
Measure PF2 inner beam maps(f,pol) | 0% | Fri 4/12/02 | Sat 4/13/02 | Low | Comm,GBT,Eng | Continuum mapping of the inner beam of the telescope which should be influenced by the receiver feed's illumination pattern. Illumination might be dependent on frequency and polarization.... | ||
Measure PF2 bandpass(f.pol) and baselines(f,pol) | 0% | Sat 4/13/02 | Mon 4/15/02 | Low | Comm,GBT,Eng | Spectral-line observations toward blank sky (zenith) across the receivers bandpass in all polarizations looking for bandpass and baseline shapes. | ||
Measure PF2 beam squint(f) | 0% | Mon 4/15/02 | Tue 4/16/02 | Low | Comm,GBT,Eng | Polarization cross continuum measurements of an unpolarized source at various frequencies in all polarizations to determine beam squint.... | ||
Determine PF2 polarization hybrid settings(f) | 0% | Tue 4/16/02 | Wed 4/17/02 | Low | Comm,GBT,Eng | Continuum cross-scan measurements toward an unpolarized source to determine the optimum setting of the polarization hybrid as a function of frequency.... | ||
PF2 calibration data reduction | 0% | Wed 4/17/02 | Wed 4/17/02 | Low | 444 | Data reduction of the gain calibration observations | ||
Determine PF2 Tcal(f,pol) and Tsys(f,pol) | 0% | Wed 4/17/02 | Wed 4/17/02 | Low | Comm | Data reduction of calibrator data to determine system temperature and noise diode value as a function of frequency for all polarizations. Attempt to rectify any differences between values supplied by engineer and that determined on astronomical sourc... | ||
PF2 ready for experiments | 0% | Wed 4/17/02 | Wed 4/17/02 | Low | 439 | 453 | Milestone indicating that the PF2 receiver is ready for general use.... | |
All receivers have been commissioned | 0% | Wed 4/17/02 | Wed 4/17/02 | Low | 324,339,353,367,381, 396,411,424,438,452 |