The next deadline for the submission of observing proposals for the IRAM 30m telescope is September 7th, 1998, 24:00 h. The scheduling period extends from November 15, 1998 to May 15, 1999, covering roughly the winter period at Pico Veleta. Three types of proposals will be considered:
1. proposals using the observatory's standard heterodyne receivers at wavelengths of 3, 2 and 1.3 mm.
2. proposals using a 0.8 mm heterodyne receiver.
3. proposals using a 1.3mm bolometer. The bolometers are provided by the MPIfR and have arrays of 19 or 37 pixels.
4. proposals using a 2mm bolometer, DIABOLO, owned by the Observatoire de Grenoble.
Roughly 2800 hours of observing time will be available, which should allow scheduling of a few longer programmes (of the order of 100 hours), with emphasis on 1.3 mm observations.
In view of the considerable cost and overhead involved in the operation of non-standard receivers, the 2mm bolometer and the 0.8mm heterodyne receiver will only be scheduled if there is sufficiently strong demand for these instruments.
The main news, proposal formalities, details of the various receivers, and observing modes are described below.