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VLA Computing Memoranda

The VLA Computer Memoranda discuss technical computer issues at the VLA. After-the-observation data processing algorithms are covered by the VLA Scientific Memoranda.

For more information on VLA Computer memoranda, and for copies of memos not available on-line, contact Gayle Rhodes at 505-835-7245 or via e-mail at grhodes@nrao.edu

To view a document, click on the highlighted name with your mouse; to FTP a document to your home institution, hold down the SHIFT key and click on the highlighted name with your mouse.

No. Title Author(s) Date FTP
188 VLA Archive Data Format G. C. Hunt, K. P. Sowinski 05/01/96
187 VLAPLAN-VLA Observing Strategy Planner A. Bridle 05/10/94 postscript
186 VLA Archive Data Format G. C. Hunt, K. P. Sowinski, T. J. Bottomly 06/01/93
185 Synchronous System Data Formats K. Sowinski 03/05/86
184 IAT/UTC Clock Ver. 2.1 P. Dooley 09/05/91
183 IAT/UTC Clock Ver. 2.0 P. Dooley 04/01/91
182 Use of `Raster Mode' at the VLA K. Sowinski 05/04/91
181 The Relative Performance of AIPS & ISIS R. Perley, P. Diamond, C. Flatters 09/28/89
180 Errors in the VLA Gain Calibration when observing the Sun T. Bastian 06/30/89
179 VLA Observing Strategy Plan A. Bridle 12/15/88
178 Benchmarking the AIPS Calibration Package R. Perley 01/00/88
177 Voyager Considerations for the VLA On-Line System (Not for General Distribution) G. Hunt 09/00/87
176 Coding and Compression of Radio Images J. Brooks 10/01/85
175 Data Display: Searching for New Avenues in Image Analysis A. Rots 07/30/85
174 More on Image Compression F. Schwab 02/00/85
173 Transmission of Digital Data Images Over Slow Communication Lines A. Rots 10/00/84
172 Whatever Happened to the Pipeline? R. Duquet 08/00/84
171 Gain Codes and Map Artifacts II P. Crane 03/00/84
170 Radio Imaging at NRAO R. Miller 02/00/84
169 Gain Codes and Map Artifacts P. Crane 11/00/83
168 A Computer Plan for The VLA R. Duquet, G. Hunt, R. Burns 09/00/83
167 Implementation of the J2000 Coordinate System at the VLA B. G. Clark 05/00/83
166 Upgrade of the VLA On-Line Computer G. Hunt, K. Sowinski 02/00/83
165 Structure of the Gain Files Records Written by ASCAL F. Schwab 01/00/83
164 Interactive Graphics on the VLA Pipeline R. D. Ekers, G. Hunt 06/00/82
163 Self-Maintenance for VLA Computers D.S. Retallack 04/00/82
162 Bit-Level Description of the Digital Control System and DCS Task K.P. Sowinski, R. Lowe 04/00/82
161 Floating Point Format for Visibilities B. G. Clark 10/00/81
160 GRIDDER System Part III. Changes Made to Floating Point Systems Software W. N. Brouw 10/00/81
159 GRIDDER System Part II. PDP 11/44 Programs W. N. Brouw 10/00/81
158 GRIDDER System Part I. Array Processor Programs W. N. Brouw 10/00/81
157 Remarks on the GRIDDER Development W. N. Brouw 02/00/81
156 Rational Approximations to Selected 0-order Spheroidal Functions F. R. Schwab 02/00/81
155 An Improved Version of the On-Line Data Checking Algorithm CHKDEF S.R. Spangler, K.P. Sowinski 02/00/80
154 A Note on Polarization Calibration F. R. Schwab 12/00/79
153 Solutions for Antenna Gain B. G. Clark 12/00/79
152 An Implementation of CLEAN B. G. Clark 12/00/79
151 Data Compression by Averaging Edited VLA Data R.M. Hjellming 10/00/79
150 Quantization Correction of VLA Correlation Measurements. Released 10/00/79 F. R. Schwab 12/00/78
149 Source Change Timing B. G. Clark 12/00/78
148 Concerning VLA Local Oscillator Settings G. Hunt 11/28/78
147 Technical Report on October 1978 State of the Interactive Map Processing System (IMPS) J.M. Torson, R.M. Hjellming, D.L. Ehnebuske 10/00/78
146 Use of the Hermitian Property in Three-Dimensional Map Processing B. G. Clark 05/00/78
145 VLA Sorting Engine--Design Considerations J. Hudson, G. Hunt, D. Ehnebuske, A. Braun 05/02/78
144 Post-Processing-Phase I: Technical Memorandum-The Beginning of NIPS E. W. Greisen 03/28/78
143 Report of the VLA Off-Site Data Processing Ad Hoc Study Group M. S. Roberts 10/21/77
142 Note on Minicomputer Times for VLA Post-Processing W. R. Burns, F. R. Schwab 07/26/77
141 VLA Post-Processing: Phase I Continued E. W. Greisen 09/21/77
140 VLA Post-Processing: Phase I W. R. Burns, E. W. Greisen 03/25/77
139 VLA Post-Processing: An InitialDiscussion and Proposal W. R. Burns 07/15/76
138 Effect of Input Truncation on the Output of an FFT S.Krishnaswamy 08/00/77
137 A Digital Map-Making Scheme B. G. Clark 07/00/77
136 Proposal for Gain and Polarization Calibration of the VLA Telescope R. C. Bignell 03/01/77
135 VLA Monitor Data Formats for the DEC-10 System R. C. Bignell 02/22/77
134 VLA Correlator Data Formats for the DEC-10 System A. Braun, D. Ehnebuske, J. Hudson 12/29/76
133 Description of the Observation-Request-Editing Program OBSERV - A User's Manual E. Raimond 09/00/76
132 An Algorithm for Mapping Selected Regions of the Field of View J. Hudson 10/00/76
131 Supplement: Changes in Card Formats B. G. Clark 02/00/77
131 Source Card Formats B. G. Clark 07/08/76
130 The Data Archiving and Distribution System Initially Planned for the VLA R.M. Hjellming, N.R. Vandenberg, D.L. Ehnebuske 02/13/76
129 Optical Processor Proposal L. E. Somers, W. R. Burns 02/06/76
128 Optical Techniques for Image Synthesis in Radio Astronomy J.M. Bulabois 02/00/76
127 Spectral Line Map Making by Digital Computers-A Design Study B. G. Clark 11/10/75
126 Addendum: Format Changes to Date W. Randolph 07/15/76
126 Data Format From Synchronous System W. Randolph 09/16/75
125 Description of the DCS Task K. Sowinski 09/12/75
124 Supplement: Changes to Global Common B. G. Clark 05/26/76
124 System Control Blocks for Synchronous Computers B. G. Clark 06/17/75
123 Source Card Formats-Preliminary Specification B. G. Clark 05/09/75
122 "A Descriptive Introduction to Optical Processors Suitable for VLA Line Mapping" (DRAFT COPY ONLY - No General Distribution) L. E. Somers 05/05/75
121 Antenna Item Monitor Limit Checking - Preliminary Specification K. Sowinski, B. G. Clark 04/18/75
120 Superbee Hive Controller G. Hunt 03/28/75
119 Implementation Coding Standards for the Asynchronous Software Development Project D. Ehnebuske 03/06/75
118 CPU Link Software Program Specification B. G. Clark 01/24/75
117 Asynchronous Software Group Project Book Organization N.R.Vandenberg, R. Hjellming 01/15/75
116 System Updating and Security B. G. Clark 10/11/74
115 CPU Link Software - Specification B. G. Clark 10/07/74
114 Addendum: Monitor Data Demultiplexing -Preliminary Specification K. Sowinski 10/24/75
114 Monitor Data Demultiplexing - Preliminary Specification B. Clark 07/31/74
113 Digital Communications System Command Driver- Preliminary Specification B. G. Clark 07/15/74
112 Geometry Routines GEOM10, GEOMLR, GEOMA, GEOMDL-Preliminary Specification B. G. Clark 07/08/74
111 Boss Timekeeper-Clock B-Preliminary Specification B. G. Clark 06/17/74
110 VLA Data Reduction Routines--Intake and Red --Version A - Preliminary Specification B. G. Clark 06/07/74
109 "Why is All That Trash in Global Common?"- An Exposition B. G. Clark 05/30/74
108 VLA Synchronous Computer-Global Common-System Control Blocks-Preliminary Specification B. G. Clark 05/24/74
107 Synchronous System File Maintenance Conventions J. Torson 05/16/74
106 Assignment of Tasks to CPU's -Preliminary Specification B. G. Clark 05/02/74
105 Ephemeris Routines for the VLA--Specification Considerations B. G. Clark 08/09/73
104 VLA Telescope Pointing Analysis B. G. Clark 06/28/73
103 VLA Geometry Subroutines Specification Considerations B. G. Clark 06/12/73
102 Specification Considerations, Data Flagging System B. G. Clark 04/19/73
101 VLA Software Subsystems B. G. Clark 04/19/73

Modified on Tuesday, 13-May-2003 03:04:41 MDT