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Commissioning and Science Verification

Radio pointing offsets for single-beam receivers > Measurement†

Revision history

• 2016-09-01 - Kamazaki,T. - created

Table of contents

• Radio pointing offsets for single-beam receivers > Measurement
  • Preparations
    • 1. Aspirin is running on aste-1c
    • 2. (dAz, dEL) is (0.0, 0.0)
    • 3. OPT image
    • 4. Start iOPT on aste-c1c
  • Measurement

Preparations†

• antstat is unnecessary any more
  • iOPT_r17shm communicates with COSMOS3 through shared memories and NOT files created by antstat.

1. Login to COSMOS3 manager GUI with Group=asteXX (e.g. aste16) and Project=sbrfXX (e.g. sbrf16)
2. Run CONT qlook (qlookc) from cos3launcher and turn OFF auto-pointing on the qlook
3. Adjust pointing using either of the following observation tables
    

   Saturn	DASH345	stx5d3.start
   	BAND8	stx5b8.start

4. Run either of the following observation lists in the batch mode of the COSMOS3 manager GUI
    

   Saturn	DASH345	stsbd3.list
   	BAND8	stsbb8.list

    

1. Aspirin is running on aste-1c†

• Aspirin's running can be confirmed by looking at the Aspirin Monitor window. Check the following three items.

  Current time = 2015/04/06 01:22:06    <--- The differences among these three times
  Aspirin time = 2015/04/06 01:22:04    <--- should be less than 60 seconds.
  Weather time = 2015/04/06 01:22:01    <---
  Aspirin Offset : (Az, El) = (   8.65,   4.62 )
  Aspirin status : OK ( C22:on  C6:OFF WIND:OFF)    <--- should be "OK" and not "WIND_ON"
  Refraction Corr. status : OK                      <--- should be "OK"

2. (dAz, dEL) is (0.0, 0.0)†

• Confirm that dAz and dEl are 0.0s in the AZEL offset window.
  • If they have some offsets, set ddAz and/or ddEL so that they become 0.0 in the AZEL offset window.

3. OPT image†

• Check OPT images following the instructions in CSV/Optical pointing/Optical telescope setup/Focus adjustment

4. Start iOPT on aste-c1c†

• iOPT calculates pointing offsets from optical images and records their results to files.
• Login to aste-c1c

  > ssh astecntl@aste-c1c

• Confirm that no iOPT is running on aste-c1c

  astecntl@aste-cabin1c: ps -ef | grep iOPT | grep -v grep
  If nothing is displayed, go to the next step. If iOPT_r17shm exists, kill it.
  astecntl  4846  4806 38 23:57:49 pts/0    8:38 /cosmos3/naoj/sbinSol/iOPT_r17shm
  astecntl@aste-cabin1c: kill 4846

• Run iOPT in the directory of ~astecntl/optpon

  astecntl@aste-cabin1c: cd ~/optpon
  astecntl@aste-cabin1c: pwd
  /home/astecntl/optpon
  astecntl@aste-cabin1c: /cosmos3/naoj/sbinSol/iOPT_r17shm

• Confirm "Antenna not ready" messages

  天体に向くと毎秒10-15の測定値が流れる。
  optonのdirectoryにyyyymmddhhmm.tabというlogging fileが生成される。
  強制終了(CNTL&C)されるまで走っている。COSMOSで指示書を変えても同じlogging fileにデータが取得されるため、別のlogging fileにしたい場合は、一度強制終了して再度起動させる。

Measurement†

1. Check list
   • Check Aspirin is in the WIND ON mode

1. Start COSMOS3 and tune the receiver to be used