Infrared Astronomical Satellite, IRAS
During the 10-month lifetime
of IRAS, roughly 40% of the observing time was devoted to pointed observations,
also commonly called Additional Observations (AOs). The released POs total
7326. Targets were selected from the following categories: active galaxies;
bright stars; close galaxies; comets; deep fields; molecular clouds; Galactic
structure; or Solar system. May observations were also characterized as
'filler' or sky-survey follow-ups. The pointed observations were made
using well-defined command sequences, or macros, the most commonly used
being the DPS macro which produced scans at half the survey rate and increased
the SNR by factors ranging from 3.5 to 7.7 depending on the number of
scans and the area covered. A typical observation took about 15 minutes.
We provide the pointed observations data in a set of 16 TAR files. Each TAR file has data from a range of grid numbers. The catalog of observations can be used to determine which TAR file contains an observation of interest.
Version and release date: 1.0, 1985 Oct 2.