• • Related projects: Pointing, Quadrant Detector

1. 1. Examine QD data during Mustang rungs
      • Paul's analysis of TPAR_14
      • Brian's application of QD data to Mustang maps from TPAR_16 and TPAR_18
   2. FluxCalibrationandMonitoring

1. 1. FluxCalibrationandMonitoring

• README: description of obtaining the data for wind plots

%META:FILEATTACHMENT{name="README" attr="" comment="description of obtaining the data for wind plots" date="1201549653" path="README" size="1712" user="ToddHunter" version="1.1"}%

1. 1. Examine QD data during Mustang runs

1. 1. Examine QD data during Mustang rungs
      • Paul's analysis of TPAR_14
      • Brian's application of QD data to Mustang maps from TPAR_16 and TPAR_18

1. 1. FluxCalibrationandMonitoring

1. 1. Examine QD data during Mustang runs
   2. FluxCalibrationandMonitoring

• • 14 Dec 2007

1. 1. Characterize tracking error after azimuth track refurbishment

1. 1. Characterize Ka/CCB nod performance and Mustang daisy petal performance after servo improvements
      • Turn on tanh() term in friction compensation before Mustang is mounted on Tues Dec 11 (Joe)
      • Put QD in the archivist during Mustang runs (Brian)
   2. FluxCalibrationandMonitoring
      • Produce gain curves at Ka band
      • Update old gain curves not yet linked on Gain Performance page (L,X,Ku)
      • Decide on proper use of the Cal signals for Ka/CCB
      • Measure and produce new gain curve at K band (has never been done with Zernike terms enabled)

• Prior completed tasks
  1. Characterize tracking error after azimuth track refurbishment (see final plots on the CurrentPerformanceFall2007 page)

1. 1. Characterize Ka/CCB nod performance after servo improvements, such as friction compensation
      • Turn on friction compensation on Monday Nov 05 (Joe)
      • Put QD in the archivist during Ka/CCB runs (Brian)
   2. FluxCalibrationandMonitoring
      • Gain curves at Ka band
      • Decide on proper use of the Cal signals

• Prior completed tasks
  • Need to really check the quality of our mapping. Make a fully sampled beam map of a Condon double, after peaking up on a calibrator say five degrees away. Check how well the observed J2000 positions of both doubles match predicted. I think this is quite a high priority task; to my knowledge GBT staff have never really checked this. Write up as a project note. Frank has written Project Note 57.

1. 1. Need to really check the quality of our mapping. Make a fully sampled beam map of a Condon double, after peaking up on a calibrator say five degrees away. Check how well the observed J2000 positions of both doubles match predicted. I think this is quite a high priority task; to my knowledge GBT staff have never really checked this. Write up as a project note. Frank has written Project Note 57.

• • • Gain curves at Ka band
    • Decide on proper use of the Cal signals

1. 1. Characterize tracking error after azimuth track refurbishment

1. 1. Characterize offset pointing performance before/after azimuth track refurbishment
      • Frank's summary of 070410, 070425 vs 070926, 070928
   2. Characterize tracking error after azimuth track refurbishment

1. 1. Characterize Ka/CCB nod performance after servo improvements, such as friction compensation

1. 1. Characterize Ka/CCB nod performance after servo improvements, such as friction compensation

1. 1. FluxCalibrationandMonitoring

• • • Compute average deviation during 20 sec periods of 30 minute half-power track, and plot vs average wind speed during the 20 sec period (Todd, as suggested by Jim)

• Prior tasks

• Prior completed tasks

1. 1. Keep the wiki pages on Commission history and Commissioning experiments up to date at all times.

1. 1. Keep the wiki pages on Commissioning history and Commissioning experiments up to date at all times.

• Project Description:

• Project Description

• Meeting minutes
  • AntennaCharacterization02Nov2007
• Current tasks
  • Keep the wiki pages on Commission history and Commissioning experiments up to date at all times.
  • Characterize tracking error after azimuth track refurbishment

• Meeting minutes
  • 02 Nov 2007
• Current tasks
  1. Keep the wiki pages on Commission history and Commissioning experiments up to date at all times.
  2. Characterize tracking error after azimuth track refurbishment

• • • • Look at 30 sec scan off-source to assess the level of receiver gain fluctuations
  • Characterize Ka/CCB nod performance after servo improvements, such as friction compensation
• Prior tasks

• • • • Look at 30 sec scan off-source to assess the level of receiver gain fluctuations (Todd)
  1. Characterize Ka/CCB nod performance after servo improvements, such as friction compensation
     • Turn on friction compensation on Monday Nov 05 (Joe)
     • Put QD in the archivist during Ka/CCB runs (Brian)
• Prior tasks

-- JohnFord - 19 Jan 2007

-- ToddHunter - 04 Nov 2007

Antenna Characterization and Commissioning project

Antenna Characterization and Commissioning project (2007-8)

• Project Description:
  • Coordinate execution of pointing runs, servo tests, etc.
  • Analyze results

• Description:
  • Co-ordinate execution of pointing runs, servo tests, etc.
  • Analyze results
• Tasks
  • Keep the wiki page on Commission history up to date at all times.

• Current tasks
  • Keep the wiki pages on Commission history and Commissioning experiments up to date at all times.

• • • Compare zero wind performance now vs with the old track (Todd)
      • plots from September 08, 2007
      • older data
    • Examine performance at two different non-zero wind speeds
      • plots at 5m/s from September 15, 2007
      • Look at 30 sec scan off-source to assess the level of receiver gain fluctuations

• • Need to really check the quality of our mapping. Make a fully sampled beam map of a Condon double, after peaking up on a calibrator say five degrees away. Check how well the observed J2000 positions of both doubles match predicted. I think this is quite a high priority task; to my knowledge GBT staff have never really checked this. Write up as a project note.

What is being assessed with quality of the mapping? Beam shape? Doesn't OOF do this?

• Prior tasks
  • Need to really check the quality of our mapping. Make a fully sampled beam map of a Condon double, after peaking up on a calibrator say five degrees away. Check how well the observed J2000 positions of both doubles match predicted. I think this is quite a high priority task; to my knowledge GBT staff have never really checked this. Write up as a project note. Frank has written Project Note 57.

Antenna Characterization and Commissioning

• co-ordinate execution of pointing runs, servo tests, etc.
• Need to get wiki page on CommissioningHistory up to date. - I believe this is completed. -TRH 31Jan2007

Antenna Characterization and Commissioning project

• Meeting minutes
  • AntennaCharacterization02Nov2007
• Description:
  • Co-ordinate execution of pointing runs, servo tests, etc.
  • Analyze results
• Tasks
  • Keep the wiki page on Commission history up to date at all times.
  • Characterize tracking error after azimuth track refurbishment
  • Characterize Ka/CCB nod performance after servo improvements, such as friction compensation

• Need to get wiki commissioning history up to date

• Need to get wiki page on CommissioningHistory up to date. - I believe this is completed. -TRH 31Jan2007

What is being assessed with quality of the mapping? Beam shape? Doesn't OOF do this?

%META:TOPICINFO{author="JohnFord" date="1169242410" format="1.0" version="1.1"}% %META:TOPICPARENT{name="PTCSProjectPlan"}%

Antenna Characterization and Commissioning

• co-ordinate execution of pointing runs, servo tests, etc.
• Need to get wiki commissioning history up to date
• Need to really check the quality of our mapping. Make a fully sampled beam map of a Condon double, after peaking up on a calibrator say five degrees away. Check how well the observed J2000 positions of both doubles match predicted. I think this is quite a high priority task; to my knowledge GBT staff have never really checked this. Write up as a project note.

-- JohnFord - 19 Jan 2007