SEST -- MOPRA Comparison at Millimetre-Waves

Gain Calibration (2 June 1997, UT about 6:50)

1. Frequency Set-up
   • Channel A: HCN (88.631 GHz, USB), nominal Trx = 111 K
   • Channel B: SiO (86.847 GHz, DSB)

2. Gtp_log (average)
   • Channel A: 2.1 (paddle out), 3.9 (paddle in)
   • Channel B: 1.8 (paddle out), 3.6 (paddle in)

3. Vanecal (assuming tau = 0, Trx = 65 K)
   • Channel A: eff. Tsys = 215.7 K
   • Channel B: eff. Tsys = 183.9 K

4. Skydip => tau, Tsky, Trx, Tscatter, alpha
   • Channel A: 0.090, 25.0, 97.1, 43.6, 3.9
   • Channel B: 0.093, 25.8, 74.5, 41.1, 2.6

5. Y-factor
   • Channel A: ??
   • Channel B: ??