Observing Log


FMLO commissioning

Plan

AI-5D: OTF test (CI device table check)

 Temp. :  -0.95 C   Humid. :  9.95 % (  0.57 hPa )   Solar :  0.98 kW/m2
 Wind  :  13.82 m/s  303 deg   AirPressure : 568.52 hPa    ( Rain:  0.01 )
 Opacity @220 GHz :   0.0171

AI-5D: OTF test (GC)

[asteobs@aste-1c ~]$ mmc1_rstop [asteobs@aste-1c ~]$ ifeo_tune 1 0.030 volt=0.030000

   E/O att. =  8 dB      E/O att. =  8 dB    IF level=0.006154

new E/O att. = 8 dB IF level=0.006140 new E/O att. = 6 dB IF level=0.239065 new E/O att. = 8 dB IF level=-0.014656

8 dB  -0.014656 V

[asteobs@aste-1c ~]$ ifeo_tune 2 0.050 volt=0.050000

   E/O att. = 13 dB    IF level=0.089988

new E/O att. = 13 dB IF level=0.088885 new E/O att. = 14 dB IF level=0.066883 new E/O att. = 15 dB IF level=0.053324 new E/O att. = 16 dB IF level=0.042855 new E/O att. = 15 dB IF level=0.059700 15 dB 0.059700 V [asteobs@aste-1c ~]$ mmc1_sstop

[asteobs@aste-1c ~]$ yfactor 1

   E/O att. =  8 dB
E/O IF level = 0.005739 V

R=0.006034 V, Sky=0.005739 V, Y=0.217691 dB

[asteobs@aste-1c ~]$ yfactor 2

   E/O att. = 15 dB
E/O IF level = 0.051542 V

R=0.056387 V, Sky=0.051542 V, Y=0.390177 dB

OK, this is just because a high Tsys. QLOOK virtually shows a Tsys spectrum with noise recorded in a last R-SKY measurement.


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