Up to 4 receivers can be used simultaneously for OTF observations. OTF observations were carried out successfully since December 1995 on several programs. Because of this situation, programmes using the OTF observing mode should involve an astronomer with a demonstrated experience in this technique on the 30m Telescope. Astronomers from the IRAM-Granada staff are willing to play this role. Frequency switching is possible.
Baselines are ordinarily flatter when using one single receiver.
An instantaneous IF bandwidth of 1 GHz is available for the 230G2 receiver. Many proposals underestimate the observing time needed to carry out the programme, even under excellent weather conditions. We ask you to pay special attention to this matter as time underestimation is now a major criterion for proposal rejection . The report Calibration of spectral line data at the IRAM 30m telescope explains in detail the applied calibration procedure.