History of Observing Log/2016-08-20 (No. 1)

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Observing Log

CSV2016: Subref position offsets of DASH345 (2016-08-20)†

Tasks†

• 220GHz opacity <= 0.07 -> Subref position offsets in BAND8
• 220GHz opacity > 0.07 -> Subref position offsets in DASH345

Preparations†

1. Basic checks
   • Record which kisa files are used for DASH345 and BAND8

   aste16@aste-ms1: ssh astecntl@aste-1c "ls -l /cosmos3/aste/etc/kisag/{DASH3,BAND8}"
   lrwxrwxrwx 1 astecntl astctl 12 Jun  3  2015 /cosmos3/aste/etc/kisag/BAND8 -> BAND8.150603
   lrwxrwxrwx 1 astecntl astctl 12 Jun  1  2015 /cosmos3/aste/etc/kisag/DASH3 -> DASH3.150601

   • Check all subref parameters (dx,dy,dz,dtx,dty,dtz) are zero
   • Check Aspirin is working in the "WIND ON" mode
2. Tuning at EL=60.0 deg
   • Tuning of DASH345/BAND8 for continuum observations
   • Caution! LSB is now used in BAND8 due to [ASTE-120]
   • Don't forget to record weather conditions
3. Pointing toward Saturn

   DASH345: stx5d3.start
   BAND8:   stx5b8.start

4. Z-axis adjustment using Saturn

   DASH345: stsbd3z.start
   BAND8:   stsbb8z.start

   • Measurement and analysis for single-beam receivers
   • Add a resultant offset ddz to dz in the subref offset GUI (if |ddz| > 0.1 mm)

Subref offset positions in DASH345/BAND8†

1. Repeat cross scans toward Saturn with various (dx,dy)
   • Pointing toward Saturn (If no ddz is put in the previous step, skip this pointing)

     BAND8:   stx5b8.start
     DASH345: stx5d3.start

   • Repeat cross scans toward Saturn using the batch mode

     BAND8:   stsbb8.list
     DASH345: stsbd3.list

     • Don't forget to turn on auto-pointing in the QLOOKC GUI
2. Data reduction
   • Still under preparation

Information†

• Observers: Izumi
• Site: Mitaka
• Weather conditions (2016-08-18T23:48)

  Temperature: -2.3 C
  Humidity: 0.42 hPa
  Wind: 9.42 m/s (227 deg)
  220GHz opacity: 0.0427

Measurement Log†