NSSDCA ID: ASIR-00045
Availability: Archived at NSSDC, accessible from elsewhere
In addition to the three nearly full sky surveys during the 10-month lifetime of the satellite, roughly 40% of the observing time was used to obtain pointed observations of selected objects. The "pointed observations," also commonly called "additional observations (AO)," were made of virtually every kind of astronomical object, using either the survey array or the Chopped Photometric Channel (CPC). The selected targets for areas of scientific interest are: active galaxies, bright stars, close galaxies, deep fields, molecular clouds, galactic structure, and solar system. A typical pointed observation took about 15 min. The primary data products resulting from the AO are a directory of all observations, available as a character-coded data file, and the "deep sky grids," each of which consists of eight two-dimensional arrays of numbers, called maps. A requester consults the AO directory (83-004A-01V) to see if observations in a particular region of interest have been made; the images are then requested by asking for coordinate identifications. For more information on this data set, see "User's Guide to IRAS Pointed Observation Products," by E.T. Young et al., IPAC preprint No. PRE-008N, 1985; "IRAS Catalogs and Atlases Explanatory Supplement," edited by C. Beichman et al., 1985. Detailed information on the data base is available by contacting IPAC, 100-22, Caltech, Pasadena, CA 91125.
Questions and comments about this data collection can be directed to: Coordinated Request and User Support Office
Name | Role | Original Affiliation | |
---|---|---|---|
Mr. Gael F. Squibb | Data Provider | NASA Jet Propulsion Laboratory | gsquibb@mail.hq.nasa.gov |