GBT Project

Categories:

• GBT Receiver Performance
  • Ka-Band (26-40 GHz)
  • Q-Band (40-52 GHz)
• Commissioning Plans
• Commissioning Results
  • Pointing, Focusing, and Efficiency
  • Electronics
• Calibration
• Data Reduction
• GBT Data and Images
• Posters and Presentations
• Design Memos
• CLEO: Control Library for Operators and Engineers
• Holography
• Miscellaneous Documentation

GBT Receiver Performance:

• Updated Sept 11, 2007 -- The Performance of GBT Receivers : A Guide for Planning Observations
• The GBT at K-Band (Nov 2007, K-Band FPA Design Review; PowerPoint)
• Tests of the 600-900 MHz section of the GBT prime focus receiver
• Does the GBT’s Plate Scale Change with Elevation? (Oct 28, 2009; R. Maddalena, F. Ghigo; PDF)

Ka-Band (26-40 GHz)

• GBT Memo 246: Recent Astronomical Commissioning Results for the Ka-band (26.0-40 GHz) Receiver (May 1, 2007; D.J. Pisano, Ron Maddalena, Charles Figura, Jeff Wagg; PDF)
• GBT Memo 255: Astronomical Results from the Recommissioning of the Ka-band as a Dual-Feed, Single Channel Receiver using the Spectrometer (Dec 20, 2007; R. Maddalena, D. J. Pisano, J. Wagg; PDF)
• Ka-band Observations of low_J CO line emission in z~6 quasar host galaxies (Feb 21, 2008; J. Wagg, R. Wang, C. Carilli, F. Walter, R. Maddalena, D. J. Pisano; PDF)

Q-Band (40-52 GHz)

• Q-Band Science Case (11/2005)
• (Obsolete) Current Performance of the 40-52 GHz Receiver (Obsolete)

Commissioning Plans:

• Commissioning plan (4/14/2001) in Microsoft Project 98 format (mpp).
• HTML Task list (4/14/2001)
• HTML Resource Assignments (4/14/2001)
• Software for Testing and Commissioning the GBT (2000, Braatz, J.; McMullin, J. P.; Garwood, R. W.; Maddalena, R.; Norrod, R.; Cornwell, T. J.)
• An AIPS++ Commissioning Tool for the Green Bank Telescope (1999, Braatz, J.; McMullin, J.; Garwood, R.; Maddalena, R.; Norrod, R.)
• GBT Memo 125: Evaluating GBT Performance During the Commissioning Stage (1995, Fisher, Maddalena, McKinnon)

Commissioning Results:

• Commissioning Repository and Memos

Commissioning Results: Pointing, Focusing, and Efficiency

• Memo 5: GBT PF 800 MHz Pointing (PDF: 458 Kbytes; Balser, Maddalena, Ghigo, and Langston; March 2, 2001)
• Memo 6: GBT S-band (2 GHz) Pointing (PDF: 995 Kbytes; Balser, Maddalena, Ghigo, and Langston; March 23, 2001)
• Memo 7: Gregorian Focus Calibration at S-band: empirical determination of optimum subreflector focus tracking in X and Y (PDF: 53 Kbytes; Ghigo, Maddalena, Balser, and Langston; March 29, 2001)
• Memo 8: Comparison of feed arm metrology with focus tracking measurements (PDF: 16 Kbytes; Ghigo and Maddalena; April 2, 2001)
• Memo 9: GBT S-band (2 GHz) Pointing Stability (PDF: 540 Kbytes; Balser, Langston, Maddalena, and Ghigo; April 6, 2001)
• Memo 10: Gain and Efficiency at S-Band (PDF: 96 Kbytes; Ghigo, Maddalena, Balser, and Langston; May 10, 2001)
• Memo 11: Plate Scale and Pointing Effects of Subreflector Positioning at 2 GHz (PDF: 164 Kbytes;   VanWey, Ghigo, Maddalena, Balser, Langston, and McKinnon; July 18, 2001)
• Memo 12: GBT Prime Focus (Band 1-4): Focus Tracking (PDF: 704 Kbytes;   Balser, Ghigo, Maddalena, and Langston; August 23, 2001)
• Memo 14: GBT Prime Focus (Band 1-4): All Sky pointing at 800 MHz (PDF: 619 Kbytes; Balser, Maddalena, Ghigo, and Langston; September 14, 2001)
• Memo 16: Improvements to the GBT Refraction Model (PDF: 294 Kbytes; Maddalena, Ghigo, Balser, and Langston; January 23, 2002)
• Memo 17: GBT X-band (9.6 GHz): All-Sky Pointing (PDF: 556 Kbytes; Balser, Maddalena, Ghigo, and Langston;January 30, 2002)
• Memo 20: GBT X-band (9.6 GHz): Pointing Stability (PDF: 585 Kbytes; Balser, Maddalena, Ghigo, and Langston;March 10, 2002)

Commissioning Results: Electronics

• Memo 1: Frequency Checks of the GBT RF/IF/LO System (PDF: 436 Kbytes;     McKinnon and Maddalena;    January 20, 2001) 
• Memo 15: Spectrometer Tests with IF Rack Noise Source (PDF: 357 Kbytes; Langston, Balser, Maddalena, and Ghigo; September 17, 2001)
• Memo 21: Comparison of GBT Backend Total Intensity Measurements (PDF: 682 Kbytes; Langston, Balser, Ghigo, and Maddalena;February 2, 2002)
• Exploring the Measured and Theoretical Noise of the GBT Spectrometer (PDF: 595 Kbytes; Maddalena; October 30, 2009)

Calibration:

• High Precision Calibration of Wide Bandwidth Observations with the GBT -- (July 26, 2007, Paper presented at the 2007 URSI  meeting in Ottawa, ON; PowerPoint 1.2 MBytes)
• High-Precision Calibration, Baselines and Nonlinearities with the GBT (S. F. Hynes, R. J. Maddalena, C. C. Figura; January 2007 AAS Meeting; PDF 1.3 MBytes)
• Noise Diodes, Calibration, Baselines & Nonlinearities (Maddalena, Hynes, & Figura; July 27, 2006 Colloquiem; PowerPoint; 1.2 MBytes)
• Noise Diodes, Calibration, Baselines and Nonlinearities (Hynes, S.F., Maddalena, R., Figura, C.; Aug 2006; Word Document)
• High-Precision Calibration of Data from Single-Dish Radio Telescopes (R. J. Maddalena and C. Johnson; January 2006 AAS Meeting; PDF 4.5 MBytes)
• Improving the Techniques for Calibrating Data for the GBT (CH Johnson, RJ Maddalena, AH Minter; May 2005; Word Document
• Methods for Calibrating GBT Data (Maddalena -- Draft memo; July 2005; PDF 0.7 MBytes)
• GBT Commissioning Memo 22: Comparison of Engineer's and Astronomical Noise Diode Values for Four Receivers (PDF: 1221 Kbytes; Johnson, Maddalena, Ghigo, and Balser; December 3, 2002)
• Specification of GBT Astronomical Intensity Calibration (2001, Braatz et al; PDF 2.2 Mbytes)
• Continuum Calibration (2000, PDF 377 Kbytes)

Data Reduction:

• Update on Data Processing with the GBT (2007, Garwood, R. W.; Braatz, J. A.; Maddalena, R. J.; Marganian, P.; Minter, A. H)
• GBTIDL: A New Package for Reduction and Analysis of GBT Spectral Line Data (2006, Marganian, P.; Garwood, R. W.; Braatz, J. A.; Radziwill, N. M.; Maddalena, R. J.)
• Data Analysis Plan (Presented at the Oct 15, 2004 GBT IDL Workshop; PowerPoint)
• Increasing the Accessibility of Green Bank Telescope Data (2004, O'Neil, K.; Radziwill, N.; Maddalena, R.)
• Components of a Data Analysis System: Scientific Drivers in the Design of an Analysis System (Colloquiem, June 2004; PowerPoint)
• Data Reduction and Analysis Techniques -- A lecture given at the "2003 NAIC-NRAO Single Dish School".  Available formats: PDF (3.2 MBytes), and Power-Point (2.4 MBytes).
• Data Reduction and Analysis Techniques from "The Proceedings of the 2001 NAIC-NRAO Single Dish School" (PDF: 2.1 MBytes).
• Data Reduction and Analysis Techniques -- A lecture given at the "2001 NAIC-NRAO Single Dish School".  Available formats: HTML, PDF (2.5 MBytes), and Power-Point (2.1 MBytes).

GBT Data and Images:

• Orion Nebula at 8.4 GHz (Shepherd, Maddalena, & McMullin)
• Omega Nebula Poster (Ghigo, Maddalena, Langston Minter, & Saxton; PDF 0.3 MBytes)
• M17 (The Omega Nebula) at 8.4 GHz 
• Cass A at 8.4 GHz
• W3(OH) at 8.9 GHz
• Tycho's Supernovae Remnant at 8.9 GHz
• Cygnus X and A at 800 MHz
• Cygnus X at 2 GHz
• GBT Memo 232: Apparent Temperature of Mercury, Mars, Saturn, and Venus at X Band (2004, Langston, G., Braatz, J., Ghigo, F., Maddalena, R., Minter, T. and O'Neil; PDF)

Posters and Presentations:

• The Green Bank Telescope -- (May, 2006 Chautauqua workshop; PowerPoint 12.2 MBytes)
• The Radio Milky Way and The Green Bank Telescope (Nov 2005 Public Colloquium at Glenville State College; PowerPoint 11.1 MBytes)
• The Green Bank Telescope: Current Status and Early Results (Prestage & Maddalena, 2003,  "Proceeding of SPIE Vol. 4837"; PDF 1.3 Mbytes)
• Early Results from the Robert C. Byrd Green Bank Telescope (January 2002; JPG 618 Kbytes)
• Status of the Green Bank Telescope : First Reports on Outfitting and Commissioning (January 2001; JPG 970 Kbytes)
• The Green Bank Telescope : User Interfaces (January 2000; JPG 1030 Kbytes

Design Memos:

• GBT and Aips++ requirements for traditional, all-sky pointing (PDF 59 Kbytes)
• GBT Memo 58: Beam-switching on the GBT (Maddalena & Salter, PDF)
• GBT Memo 105: Pointing the GBT: The Astronomical Pointing System (APS) Ramifications for M&C&&C and AIPS++ (PDF 37 Kbytes)
• GBT Memo 107: A Suggested Design for the Control Facility for the Green Bank Telescope (PDF 1.7 Mbytes)
• GBT Memo 112: Refraction, Weather Station Components, and Other Details for Pointing the GBT (PDF 987 Kbytes)
• Doppler Tracking and the GBT Monitor and Control System (PDF 74 Kbytes)
• Operator and User Documentation Plans - GBT Comprehensive Management Plan
• GBT Configuration: Requirements and Algorithms (F. Ghigo and R. Maddalena; April 9, 2003; PDF: 3.7 MBytes)
• How an Observer Can Configure I.F. Hardware (PDF 1.2 Mbytes)
• Initial Tests of the GBT I.F. System (PDF 26 Kbytes)
• Mockup Test Plans -- for the GBT Advisory Committee (October 7-8, 1998)
• GBT Tipper and Aips++ data reduction (Maddalena; PDF 160 Kbytes)
• Scenario for the early commissioning pointing/focus observations (PDF 456 Kbytes)
• Phase Tables and Switching Signals: Modes and Current Issues. (PDF 453 Kbytes)
• Switching Signal Configurations (PDF 416 Kbytes)
• Predicting Good Conditions for High Frequency Observing with the Green Bank Telescope (Maciolek & Maddalena; PDF 1.24 Mbytes)
• Scope of I.F. Balancing Project (Maddalena and Hogg; PDF 300 kBytes)
• Requirements for Multifrequency Observing with the GBT (Draft; Oct 23, 2002; PDF)

CLEO: Control Library for Operators and Engineers:

• GBT Operator's Position Panel
• GBT Operator's Position Panel (Revisions and priorities)
• GBT Operator's GUI Slide Show
• Prototype Screens from a demonstration given on April 9, 1998
• Presentation at the GBT Science Workshop (July 27-29, 1998)
• GBT Operator Interface - Presentation for the GBT Advisory Committee (October 7-8 1998)
• Control Library for Engineers and Operator -- Technical Seminar August 1999
• The Green Bank Telescope : User Interfaces (January 2000; JPG 1030 Kbytes)
• The User Interfaces for the NRAO-Green Bank Telescope (Maddalena, 2003 "Proceeding of SPIE Vol. 4848"; PDF 1.9 Mbytes)
• Control Library for Engineers and Operators (CLEO) Users Manual (July, 2005)

Holography:

• GBT Memo 68: Planned Holographic Measurements with the Green Bank Telescope (Maddalena, Norrod, & White)
• Feasibility of Using Holographic Measurements to Set GBT Steel
• Presentation at the GBT Science Workshop (July 27-29, 1998)
• Resources needed for GBT holographic tests on the 140-ft
• Time line for holographic measurements on the 140-ft with GBT systems (vs. 1)
• Time line for holographic measurements on the 140-ft with GBT systems (vs. 2)
• GBT Holography -- PTCS Review, April 9, 2003 (PDF: 760 Kbytes)
• Traditional" Holography -- PTCS Review, April 9, 2003 (PDF: 1.1 MBytes)

Miscellaneous Documentation:

• Creating Web Pages
  

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  Last Updated June 19, 2008