2006-05-24 ALMA Calibration Group Examples Document Review


Table of Contents:


Attendees

  1. EdFomalont
  2. MarkHoldaway
  3. RobertLucas
  4. JeffMangum
  5. AnthonyRemijan
  6. Sakiuchi
  7. Shigehisa Takakuwa
  8. Dick Sramek
  9. BaltasarVilaVilaro
  10. Jack Welch
  11. AlWootten


Review of Amplitude Calibration Example

  • Dick Sramek : What is cycle times and duration for relative amplitude calibration measurements? A single amplitude calibration system measurement will take something like 10 seconds. This relative amplitude calibration system measurement will need to be done every 5 to 30 minutes, where the shorter interval is necessary at high frequency. Will insert this into relative amplitude calibration sequence description. (DONE: JeffMangum)
  • Dick Sramek : Shouldn't one try to measure the relative flux calibration as a function of time using measurements of a strong calibrator? Yes. Will insert this into relative amplitude calibration sequence description. (DONE: JeffMangum)
  • Baltasar Vila Vilaro : Won't insertion of the solar filter for amplitude calibration of solar observations require longer integration times on the loads? Yes. Will add a bit to the solar calibration description point to make this clear. (DONE: JeffMangum)
  • Mark Holdaway : For single dish measurements, amplitudes for all sources, not just point sources, will need to be converted to Janskys. Correct. Will change wording. (DONE: JeffMangum)
  • Al Wootten : Document could be clarified with a "timing diagram". Correct.


Review of Phase Calibration Example

  • Baltasar Vila Vilaro : To derive a check of phase calibration bootstrapping at high frequencies should do strong calibrator target frequency measurements every 20-30 seconds. This would represent a repeat of the current "instrumental sequence". Will change wording to reflect this. (DONE: JeffMangum)
  • Al Wootten : Document could be clarified with a "timing diagram". Correct.


Next Review

On 2006/06/08 we will review the bandpass and pointing calibration example documents.


-- JeffMangum - 25 May 2006
Topic revision: r3 - 2006-07-10, JeffMangum
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