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Commissioning and Science Verification

Subref z-position offsets>Measurement and analysis for single-beam receivers†

Revision history

• 2016-07-26 - created by Kamazaki,T.

Table of contents

• Subref z-position offsets>Measurement and analysis for single-beam receivers
  • Preparations
  • Measurement
  • Analysis

Preparations†

1. Login to COSMOS3 manager GUI with Group=asteXX (e.g. aste16) and Project=sbrfXX (e.g. sbrf16)
2. Tune the receiver to be used
3. Run CONT qlook (qlookc) from cos3launcher
   • Push the START button.

Measurement†

1. Adjust pointing using either of the following observation tables
    

   Saturn	DASH345	stx5d3.start
   	BAND8	stx5b8.start

    
   • Auto-pointing is available toward bright planets.
   • Turn on auto-pointing on the CONT qlook if necessary.
2. Measure z-position of the sub-reflector by running either of the following observation tables
    

   Saturn	DASH345	stsbd3z.start
   	BAND8	stsbb8z.start

Analysis†

1. Login to an analysis computer (e.g. aste-ms1/aste-mx3) with account=asteXX (e.g. aste16)
2. Change to the data directory of the project

   asteXX@aste-ms1: cd ~/sbrfXX/continuum/data

   e.g.)
   aste16@aste-ms1: cd ~/sbrf16/continuum/data/
   aste16@aste-ms1: pwd

   /home/aste16/sbrf16/continuum/data
3. Rsync CONT data from the ASTE site

   asteXX@aste-ms1: ~/analysis/bin/cont_rsync.sh <project> <obs. table> <time (YYYY-MM-DD)>

   e.g.)
   aste16@aste-ms1: ~/analysis/bin/cont_rsync.sh sbrf16 stsbd3z 2016-08-17
   * rsync -e ssh -avz astecntl@aste-1c:/cosmos3/aste/bklog/contlck/curr/CONT.stsbd3z*.aste16.sbrf16.20160817*.LCK /home/aste16/sbrf16/continuum/data/
   receiving incremental file list
   CONT.stsbd3z.aste16.sbrf16.201608170038.LCK    <--- downloaded files are listed
   ...

4. Run lck_sbrfz.py

   asteXX@aste-ms1: ~/analysis/bin/lck_sbrefz.py <channel> <a downloaded file>
   channel: "-c 1" for CH1, "-c 2" for CH2

   e.g.)
   aste16@aste-ms1: ~/analysis/bin/lck_sbrefz.py -c 1 CONT.stsbd3z.aste16.sbrf16.201608170038.LCK
   *** the following parameters are assumed [#t00ad65d]
   ***   dummy scan duration = 10.0 seconds [#q05b6516]
   ***   start dz =  -3.0 seconds [#t3b49052]
   ***   stop  dz = +13.0 seconds [#l9a3b60f]
   # Plot fit results
   * -> ddz [sample] = 188.558254 [#he9bf182]
   * -> ddz [mm]     = 0.016932 [#ie192f47]

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