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
• Scheduling
  
• Data Reduction
• GBT Data and Images
• Posters and Presentations
• Design Memos
• CLEO: Control Library for Operators and Engineers
• Holography
• Miscellaneous Documentation

GBT Receiver Performance:

• GBT Memo 285: Properties of the GBT at L-Band for Commensal Observing (Maddalena, Aug 16, 2013)
• The Performance of GBT Receivers : A Guide for Planning Observations (Maddalena; Nov 1, 2009)
• The GBT at K-Band (Maddalena; K-Band FPA Design Review; Nov 2007; PowerPoint)
• Tests of the 600-900 MHz section of the GBT prime focus receiver (Maddalena & Balser; Nov 1996)
• GBT Memo 263: Does the GBT’s Plate Scale Change with Elevation? (Maddalena & Ghigo; Oct 28, 2009)

Ka-Band (26-40 GHz)

• GBT Memo 246: Recent Astronomical Commissioning Results for the Ka-band (26.0-40 GHz) Receiver (Pisano, Maddalena, Figura, & Wagg; May 1, 2007)
• GBT Memo 255: Astronomical Results from the Recommissioning of the Ka-band as a Dual-Feed, Single Channel Receiver using the Spectrometer (Maddalena, Pisano, & Wagg; Dec 20, 2007)
• GBT Memo 256: Ka-band Observations of low_J CO line emission in z~6 quasar host galaxies (Wagg, Wang, Carilli, Walter, Maddalena, & Pisano; Feb 21, 2008)

Q-Band (40-52 GHz)

• Q-Band Science Case (Maddalena; 11/21/2005)
• Current Performance of the 40-52 GHz Receiver (Obsolete; Maddalena; Obsolete; Sept 19, 2005)

Commissioning Plans:

• Commissioning plan (Maddalena; 4/14/2001; Microsoft Project).
• HTML Task list (Maddalena; 4/14/2001)
• HTML Resource Assignments (Maddalena; 4/14/2001)
• Software for Testing and Commissioning the GBT (Braatz, McMullin, Garwood, Maddalena, Norrod, & Cornwell; From ADASS Conference Proceedings; 2000)
• An AIPS++ Commissioning Tool for the Green Bank Telescope (Braatz, McMullin, Garwood, Maddalena, & Norrod; Meeting of the AAS; Dec 1999)
• GBT Memo 125: Evaluating GBT Performance During the Commissioning Stage (Fisher, Maddalena & McKinnon;  April 1995)

Commissioning Results:

• Commissioning Repository and Memos

Commissioning Results: Pointing, Focusing, and Efficiency

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

Commissioning Results: Electronics

• GBT Commissioning Memo 1: Frequency Checks of the GBT RF/IF/LO System (McKinnon & Maddalena; January 20, 2001) 
• GBT Commissioning Memo 15: Spectrometer Tests with IF Rack Noise Source (Langston, Balser, Maddalena, & Ghigo; September 17, 2001)
• GBT Commissioning Memo 21: Comparison of GBT Backend Total Intensity Measurements (Langston, Balser, Ghigo, & Maddalena; February 2, 2002)
• GBT Memo 264: Exploring the Measured and Theoretical Noise of the GBT Spectrometer (Maddalena; October 30, 2009)

Calibration:

• Draft -- New Algorithm for High-Accuracy, Low-Baseline-Shape Frequency Switching (Maddalena; Nov 15, 2012)
• Modeling the Elevation and Frequency Dependence of Aperture Efficiency for the GBT’s Pipeline (Maddalena; Aug 17, 2012)
  
• GBT Memo 276: Theoretical Ratio of Beam Efficiency to Aperture Efficiency (Maddalena; Dec 15, 2010)
• High Precision Calibration of Wide Bandwidth Observations with the GBT -- Presentation Slides or Paper (Maddalena; Paper from the URSI  meeting in Ottawa, ON; July 26, 2007).  Updated presentation for a Nov 2012 Workshop.
  
• High-Precision Calibration, Baselines and Nonlinearities with the GBT (Hynes, Maddalena, & Figura; Meeting of the AAS; January 2007)
• Noise Diodes, Calibration, Baselines & Nonlinearities (Maddalena, Hynes, & Figura; July 27, 2006 Colloquiem; PowerPoint)
• Noise Diodes, Calibration, Baselines and Nonlinearities (Hynes, Maddalena, & Figura; Aug 2006; Word Document)
• High-Precision Calibration of Data from Single-Dish Radio Telescopes (Maddalena & Johnson; Meeting of the AAS; January 2006)
• Improving the Techniques for Calibrating Data for the GBT (Johnson, Maddalena, &Minter; May 2005; Word Document)
• Methods for Calibrating GBT Data (Maddalena -- Draft memo; July 2005)
• GBT Commissioning Memo 22: Comparison of Engineer's and Astronomical Noise Diode Values for Four Receivers (Johnson, Maddalena, Ghigo, & Balser; December 3, 2002)
• Specification of GBT Astronomical Intensity Calibration (Braatz et al; 2001)
• Continuum Calibration (Maddalena; 2000)

Scheduling

• DSPN 9: Comparing Methods of Measuring the Relative Merits of Schedules (Maddalena; January 30, 2009)
• GBT Memo 267: Weather Conditions at Green Bank Relevant to Observing at mm-Wavelengths (Lockman & Maddalena; March 2010)
• The GBT Dynamic Scheduling System (McCarty et al, 2013)
  
• DSPN 18; Recommended Changes to the Constants Used by the DSS for Fall 2014 (Maddalena & Frayer; November 20, 2014)
  

Data Reduction:

• Update on Data Processing with the GBT (Garwood, Braatz, Maddalena, Marganian, & Minter; From ADASS Conference Proceedings; 2007)
• GBTIDL: A New Package for Reduction and Analysis of GBT Spectral Line Data (Marganian, Garwood, Braatz, Radziwill, & Maddalena; From ADASS Conference Proceedings; 2006)
• Data Analysis Plan (Maddalena; Presented at the GBT IDL Workshop; Oct 15, 2004; PowerPoint)
• Increasing the Accessibility of Green Bank Telescope Data (O'Neil, Radziwill, & Maddalena; From ADASS Conference Proceedings; 2004)
• Components of a Data Analysis System: Scientific Drivers in the Design of an Analysis System (Maddalena; Colloquiem; June 2004; PowerPoint)
• Data Reduction and Analysis Techniques (Maddalena; A lecture given at the "NAIC-NRAO Single Dish School" 2003;  Also available in Power-Point.)
• Data Reduction and Analysis Techniques (Maddalena; From "The Proceedings of the NAIC-NRAO Single Dish School"; 2001).
• Data Reduction and Analysis Techniques (Maddalena; A lecture given at the "NAIC-NRAO Single Dish School"; 2001; Also available fin Power-Point.)

GBT Data and Images:

• Orion Nebula at 8.4 GHz (Shepherd, Maddalena, & McMullin)
• Omega Nebula Poster (Ghigo, Maddalena, Langston Minter, & Saxton)
• M17 (The Omega Nebula) at 8.4 GHz (GBT Commissioning Team)
• Cass A at 8.4 GHz (GBT Commissioning Team)
• W3(OH) at 8.9 GHz (GBT Commissioning Team)
• Tycho's Supernovae Remnant at 8.9 GHz (GBT Commissioning Team)
• Cygnus X and A at 800 MHz (GBT Commissioning Team)
• Cygnus X at 2 GHz (GBT Commissioning Team)
• GBT Memo 232: Apparent Temperature of Mercury, Mars, Saturn, and Venus at X Band (Langston, Braatz, Ghigo, Maddalena, Minter, & O'Neil; 2004)

Posters and Presentations:

• GBT 3mm Observations in the ALMA-Era (Frayer, Mason, Kepley, Schnee, & Maddalena, "AAS Meeting #222"; 2013)
  
• The Green Bank Telescope -- (Maddalena; Chautauqua workshop; May, 2006; PowerPoint)
• The Radio Milky Way and The Green Bank Telescope (Maddalena; Public Colloquium at Glenville State College; Nov 2005; PowerPoint)
• The Green Bank Telescope: Current Status and Early Results (Prestage & Maddalena; "Proceeding of SPIE Vol. 4837"; 2003)
• Early Results from the Robert C. Byrd Green Bank Telescope (Maddalena; January 2002; JPG)
• Status of the Green Bank Telescope : First Reports on Outfitting and Commissioning (Maddalena, Balser, Ghigo, Jewell, Langston & McKinnon; Meeting of the AAS; January 2001; JPG)
• The Green Bank Telescope : User Interfaces (Maddalena & Fisher; Meeting of the AAS; January 2000; JPG)
  

Design Memos:

• GBT and Aips++ requirements for traditional, all-sky pointing (Maddalena; Sept 16, 1996)
• GBT Memo 58: Beam-switching on the GBT (Maddalena & Salter; Oct 16, 1990)
• GBT Memo 105: Pointing the GBT: The Astronomical Pointing System (APS) Ramifications for M&C&&C and AIPS++ (Heiles & Maddalena; Aug 1993)
• GBT Memo 107: A Suggested Design for the Control Facility for the Green Bank Telescope (Maddalena; August 11, 1993)
• GBT Memo 112: Refraction, Weather Station Components, and Other Details for Pointing the GBT (Maddalena; Feb 1994)
• Doppler Tracking and the GBT Monitor and Control System (Maddalena)
• Operator and User Documentation Plans - GBT Comprehensive Management Plan (Maddalena & Bignell)
• GBT Configuration: Requirements and Algorithms (F. Ghigo & R. Maddalena; April 9, 2003)
• How an Observer Can Configure I.F. Hardware (Maddalena & Heiles; 1993)
• Initial Tests of the GBT I.F. System (Maddalena)
• Mockup Test Plans -- for the GBT Advisory Committee (Maddalena, Norrod & Braatz; October 7-8, 1998)
• GBT Tipper and Aips++ data reduction (Maddalena; Aug 7, 2002)
• Scenario for the early commissioning pointing/focus observations (Maddalena; Jan 26, 2001)
• Phase Tables and Switching Signals: Modes and Current Issues. (Maddalena; Oct 26, 2001)
• Switching Signal Configurations (Maddalena; Aug 8, 2002)
• Predicting Good Conditions for High Frequency Observing with the Green Bank Telescope (Maciolek & Maddalena; Aug 2001)
• Scope of I.F. Balancing Project (Maddalena and Hogg; Nov 18, 2002)
• Requirements for Multifrequency Observing with the GBT (Maddalena; Oct 23, 2002)
• A Sensitivity Calculator for the GBT (Maddalena; Jan 5, 2011)
• GBT Memo 288: Recommended Minimum Switching Periods for VEGAS (Kepley, Maddalena, & Prestage; July 2014)
  

CLEO: Control Library for Operators and Engineers:

• GBT Operator's Position Panel (Maddalena)
• GBT Operator's Position Panel (Revisions and priorities) (Maddalena)
• GBT Operator's GUI Slide Show (Maddalena; May 15, 2000)
• Prototype Screens (Maddalena; April 9, 1998)
• Presentation at the GBT Science Workshop (Maddalena; July 27-29, 1998)
• GBT Operator Interface - Presentation for the GBT Advisory Committee (Maddalena; October 7-8 1998)
• Control Library for Engineers and Operator -- Technical Seminar (Maddalena; August 1999)
• The Green Bank Telescope : User Interfaces (Maddalena & Fisher; Meeting of the AAS; January 2000; JPG)
• The User Interfaces for the NRAO-Green Bank Telescope (Maddalena; "Proceeding of SPIE Vol. 4848"; 2003)
• Control Library for Engineers and Operators (CLEO) Users Manual (Maddalena, Krump, & Rebinski; July, 2005)

Holography:

• GBT Memo 68: Planned Holographic Measurements with the Green Bank Telescope (Maddalena, Norrod, & White; September 30, 1991)
• Feasibility of Using Holographic Measurements to Set GBT Steel (Maddalena; June 14, 1994)
• Presentation at the GBT Science Workshop (Maddalena; July 27-29, 1998)
• Resources needed for GBT holographic tests on the 140-ft (Maddalena; Dec 8, 1998)
• Time line for holographic measurements on the 140-ft with GBT systems (Maddalena; August 27, 1996)
• GBT Holography -- PTCS Review (Chandler & Maddalena; April 9, 2003)
• Traditional" Holography -- PTCS Review, (Maddalena; April 9, 2003)
• The Updated 2014 Gravity Model (PTCSPN 76; Maddalena, Frayer, Lashley-Colhirst, Norris; October 7, 2014)
• Alternatives to AutoOff that Might Allow for Daytime Observing (Science Lunch Talk, May 12, 2022)
  

Miscellaneous Documentation:

• Creating Web Pages (Maddalena; Technical Seminar) 

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  Last Updated March 9, 2014