Sideband Response

Ideally the intensities obtained for a line should be independent of the sideband to which the receiver is tuned during the observations. Deviations from this could indicate problems in the receiver, in the calibrator software, or in the atmospheric model used for calibration.

We monitored for APEX-2A the lines ¹²CO(3-2) and OCS304 in both sidebands.

Monitoring results

The following table gives the two lines we currently monitor this way, and their frequencies. It also shows the atmosphere in the signal and possible image bands, as well as monitoring results.

Line	Frequency [GHz]	Atmosphere	Time variation
12CO(3-2)	345.796000
OCS304	304.069600