History of Observing Log/2011-06-10 (No. 2)

• History
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• Observing Log/2011-06-10 has been deleted.
  • 1 (2011-06-09 (Thu) 21:29:54)
  • 2 (2011-06-10 (Fri) 00:22:58)
  • 3 (2011-06-10 (Fri) 10:30:40)
  • 4 (2011-06-10 (Fri) 12:09:29)

Observing Log

Tachihara's observation†

• Group:aa022ot
• Project:proj2
• observer: K. Tachihara from SPdA
• support: Ueda, Watanabe, Tamura

   Temp. :  -0.78 C   Humid. : 14.16 % (  0.82 hPa )   Solar :  0.07 kW/m2
   Wind  :  12.25 m/s  249 deg   AirPressure : 571.23 hPa    ( Rain:  0.01 )
   Opacity @220 GHz :   0.0533

• UT 0:14 start tuning OriCal.start
• Communication unstable
• UT 0:30 pointing gxmonMH.start -- curshes a few times
• UT 0:39 pointing gxmonMH.start
• UT 0:49 calibration OriCal.start -- Shit! Orion becomes too close to the Sun!
• UT 0:51 pointing i1021MH.start El=52 -- Fitting results are ***/***.

   Temp. :  -3.35 C   Humid. : 20.49 % (  0.98 hPa )   Solar :  0.00 kW/m2
   Wind  :   7.85 m/s  253 deg   AirPressure : 571.33 hPa    ( Rain:  0.01 )
   Opacity @220 GHz :   0.0611

• The order of the 5 pointing positions might be wrong.
• UT 1:00 pointing i1021MH.start El=51
• UT 1:09 calibration I10Cal2 El=49 Tsys A1=249, A2=3045, A3=348, A4=365
• rms = 0.062, 1.203, 0.088, 0.086, A2 band edge shows large gain loss.
• UT 1:26 pointing r4078MH El=33
• UT 1:32 project ChaX2.start El=35

   Temp. :  -3.83 C   Humid. : 20.72 % (  0.95 hPa )   Solar :  0.00 kW/m2
   Wind  :   5.32 m/s  235 deg   AirPressure : 571.59 hPa    ( Rain:  0.01 )
   Opacity @220 GHz :   0.0760

• A2 is noisy. Tsys=2680K. Try tuning again.
• UT 1:37 ChaX2.tune
• UT 1:38 project ChaX2.start El=35
• A2 Tsys = 990 K, still bad.
• Tuning again with LO Att adjustment
• UT 1:46 project ChaX2.start El=36

   Temp. :  -4.10 C   Humid. : 21.60 % (  0.97 hPa )   Solar :  0.00 kW/m2
   Wind  :   0.58 m/s   38 deg   AirPressure : 571.76 hPa    ( Rain:  0.01 )
   Opacity @220 GHz :   0.0560

• A2 Tsts = 959 K. Not improved. It is found that the 1st IF for A2 was slightly out of range (7.39 GHz)
• UT 1:56 I102Cal.start
• Change the dev table with new f_IF
• UT 2:18 Tuning with new dev table
• UT 2:21 I10Cal3.start

   Temp. :  -3.61 C   Humid. : 21.61 % (  1.01 hPa )   Solar :  0.00 kW/m2
   Wind  :   1.81 m/s  274 deg   AirPressure : 572.13 hPa    ( Rain:  0.01 )
   Opacity @220 GHz :   0.0665

• Tsys a1=309, A2=263 Much better now!
• UT 2:30 pointing iilupMH El=44
• UT 2:36 project Lup3X1n El=39

   Temp. :  -3.64 C   Humid. : 22.05 % (  1.03 hPa )   Solar :  0.00 kW/m2
   Wind  :   5.13 m/s  304 deg   AirPressure : 572.04 hPa    ( Rain:  0.01 )
   Opacity @220 GHz :   0.0531

• UT 3:03 project Lup3Y1n El=45

   Temp. :  -4.35 C   Humid. : 23.38 % (  1.04 hPa )   Solar :  0.00 kW/m2
   Wind  :   1.72 m/s  153 deg   AirPressure : 572.10 hPa    ( Rain:  0.01 )
   Opacity @220 GHz :   0.0540

• UT 3:19 Stopped in the middle

   Temp. :  -4.24 C   Humid. : 22.17 % (  0.99 hPa )   Solar :  0.00 kW/m2
   Wind  :   2.62 m/s  318 deg   AirPressure : 572.30 hPa    ( Rain:  0.01 )
   Opacity @220 GHz :   0.0418