Overview

To maximise the science return of the PACS data sets, a homogeneous Herschel/PACS Point Source Catalogue (HPPSC) was constructed from all the scan map observations. The catalogue enables a systematic and unbiased comparison of sensitivity across different Herschel fields that single programs will generally not be able to provide.

The Observation Table reports the main parameters that characterize the maps on which the source extraction was performed. Most of them correspond to Meta-keywords of the Observational Context. The level parameter states which map level was adopted for every map and the nobsids parameter specifies how many observations (obsID) contribute to the generation of the map. The obsid parameter always refers to the first observation identifier into the Observational Context (obsid001) and, for every obsid value, there are two entries in the table, corresponding to the two filters adopted.

For more information, see the Explanatory Supplement.