Proposal category

Proposals should be submitted for one of the five categories:

3MM:

Proposals that ask for 3mm data ONLY. 1.3mm receivers can still be used to provide either phase stability information or purely qualitative information such as the mere existence of fringes.

1.3MM:

Proposals that ask for 1.3mm data ONLY. 3mm receivers will be used for pointing and calibration purposes, but cannot provide any imaging.

DUAL FREQ.:

Proposals that ask for dual-frequency observations (i.e. simultaneous observations at 3mm and 1.3mm).

TIME FILLER:

Proposals that have to be considered as background projects to fill in periods where the atmospheric conditions do not allow mapping, or eventually, to fill in gaps in the scheduling, or even periods when only a subset of the standard 5-antenna configurations will be available. These proposals will be carried out on a ``best effort'' basis only.

SPECIAL:

Exploratory proposals: proposals whose scientific interest justifies the attempt to use the PdB array beyond its guaranteed capabilities. This category includes for example non-standard frequencies for which the tuning cannot be guaranteed, non-standard configurations and more generally all non-standard observations. These proposals will be carried out on a ``best effort'' basis only.

The proposal category will have to be specified on the proposal cover sheet and should be carefully considered by proposers.