Observing Log

CSV2016: Subref position offsets of DASH345 and BAND8 (2016-08-16)†

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Tasks†

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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
    • Don't forget to record weather conditions
  3. Pointing toward Saturn 
    BAND8:   stx5b8.start
DASH345: stx5d3.start
  4. Z-axis adjustment using Saturn 
    BAND8:   stsbb8z.start
DASH345: stsbd3z.start
    • Add a resultant offset to dz
↑

Subref offset positions in BAND8†

  1. Repeat cross scans toward Saturn with various (dx,dy)
    • Pointing toward Saturn
    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
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Subref beam maps to estimate rough offsets of DASH345†

  1. Take a map of Saturn with (dx,dy)=(0,0),(-1,0),(+1,0),(0,-1),(0,+1)
    • Set (dx,dy) in the subref offset GUI
    • Pointing toward Saturn
    BAND8:   stx5b8.start
DASH345: stx5d3.start
    • Map of Saturn
    BAND8:   str02b8.start
DASH345: str02d3.start
  2. Data reduction
    • Make Saturn maps from the CH1 data of the mapping observations with cont
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Information†

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Measurement Log†

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Preparations†

  1. Basic checks
    • 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
===================================ASTE Site===================================
  Temp. :  -4.27 C   Humid. : 11.37 % (  0.51 hPa )   Solar :  0.00 kW/m2
  Wind  :   5.56 m/s  262 deg   AirPressure : 572.34 hPa    ( Rain:  0.01 )
  Opacity @220 GHz :   0.0220
================================ Receiver Cabin ===============================
  Main Cabin:  19.3 C  Upper Cabin:  13.2 C  AzTEC AE: 168.6 C  Dewar: 168.6 C
  SCD :   ----      ----      ----      ----
================================Observation Room===============================
  Temp. :  23.34 degC   Humid. :  3.13 %
  Digital BE:   28.90 degC   32.00 degC   34.50 degC   32.29 degC 
  Meeting Rm.:  Temp:  room:  -----       entrance:  -----       WC:  -----
-------------------------------Air Conditioners--------------------------------
  Internal Out     24.30 C   22.80 C   24.30 C   25.10 C   24.30 C   27.80 C
  Internal Ret.    26.70 C   23.90 C   24.20 C   23.20 C   24.10 C   27.00 C
  External        168.60 C   -5.30 C   -3.60 C  168.60 C
================================Antenna Shelter================================
  Air-cond. :     6.30 degC    6.70 degC   -4.70 degC
  Room Temp.:     7.20 degC
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Tuning of DASH345/BAND8 for continuum observations†

  1. Set antenna EL angle to 60 degrees
  2. Login to aste-1c with asteobs 
    > ssh asteobs@aste-1c
  3. Select CONT BE 
    asteobs@aste-1c: swbox_ctl_be CONT           <--- CONT BE is selected
asteobs@aste-1c: swbox_ctl_be
status: swbox_ctl_be CONT
  4. Select either of DASH345 and BAND8 and then, set the frequency of the synthesizer B
    • [BAND8]
    asteobs@aste-1c: asterx_sw BAND8             <--- BAND8 is selected
...
asteobs@aste-1c: synthe_ctl B FREQ 11.444    <--- 11.444 GHz x36 = 411.984 GHz
### After setting synthe ###
FREQ = 11.444000000 [GHz]                    <--- confirm the frequency is set
AMPL = 13.00 [dBm]
RF   = ON
  5. Tune DASH345/BAND8
    • [BAND8]
    asteobs@aste-1c: asterx_set BAND8
### Query of LO Freq ###
LO Freq = 411.984000000                      <--- confirm LO freq = 411.984
...
> GET_PA 0 
2.966309,247.970581,-0.290833
> GET_PA 1 
4.021912,265.975952,-0.346375
    • If necessary, adjust ATT values with lopwr_band8. 
      > lopwr_band8 -h
usage  : lopwr_band8 [-p0/-p1] [VD]
       : VD range = 0.600 - 2.600 [V]
  6. Select a sideband (USB for the both receivers) 
    asteobs@aste-1c: swbox_ctl_pol 0 1           <--- P0USB and P1USB are selected
asteobs@aste-1c: swbox_ctl_pol
status: swbox_ctl_pol 0 1
400:P0-USB	402:P1-USB
  7. Adjust signal levels input to DASBOX
    • BAND8
    asteobs@aste-1c: cont_if 2 31
...
Cont IF #2 Lev. = -0.000316 [V]
asteobs@aste-1c: cont_if 3 18
changed Cont IF #3 att. = 0 [dB]             <--- Just ignore even if 0 [dB]
...
Cont IF #3 Lev. = -0.000022 [V]
  8. Pointing toward Saturn 
    BAND8:   stx5b8.start
  9. Z-axis adjustment using Saturn 
    BAND8:   stsbb8z.start
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Analysis†

  1. Login to an analysis computer with account=aste16 
    [asteobs@aste-mx1 ~]$ ssh aste-mx3 -X -l aste16
  2. Confirm that continuum data is transferred and is located at ~/sbrf1/continuum/data 
    aste16@aste-mx3> ls ~/sbrf16/continuum/data/CONT.stsbb8z.aste16.sbrf16.201608152353.LCK
...
  3. Run lck_sbrfz.py 
    aste16@aste-mx3> ~/analysis/bin/lck_sbrefz.py -c 2 ~/sbrf16/continuum/data/CONT.stsbb8z.aste16.sbrf16.201608152353.LCK
  4. Plot fit results 
    * -> ddz [sample] = 186.326212
* -> ddz [mm]     = 0.107
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Subref offset positions in BAND8†

  1. Repeat cross scans toward Saturn with various (dx,dy)
    • Pointing toward Saturn
    BAND8:   stx5b8.start
    • Repeat cross scans toward Saturn using the batch mode
    BAND8:   stsbb8.list
    • Don't forget to turn on auto-pointing in the QLOOKC GUI
    • Cont.Qlook 
      Auto Pointing ON
Pointing Integration: 1 Average: 2
Auto Stop off
  2. Data reduction
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