Table A.1.
Instrument tuning and performance.
| Transition | ν | IFc | Tsys | Θ | ηmb |
|---|---|---|---|---|---|
| (GHz) | (GHz) | (K) | (″) | ||
 (11, 0 − 10, 1) |
547.676440 | 5.4 U | 317 | 50.3 | 0.63 |
| HDO (11, 0 − 10, 1) | 509.292420 | 6.2/5.45 U | 290 | 54.1 | 0.63 |
Notes. Entries in the table are molecular transition, rest frequency (from JPL Molecular Spectroscopy Database; Pickett et al. 1998), intermediate frequency and sideband (carefully chosen by balancing between the atmospheric transmission in the upper and lower sidebands, the receiver performance, and possible line contamination from the image sideband), single sideband system temperature (average across the intermediate frequency band), FWHM beam width, and main beam efficiency.
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