IRAS High Source Density Bins

[Adapted from the Explanatory Supplement.]

Regions with more sources per sq. deg than the confusion limit in a given band were processed according to more stringent rules than usual before inclusion in the Point Source Catalog. The regions so processed were selected on a band-by-band basis, depending on the number of sources with high or moderate quality fluxes located within a 1 sq. deg bin in ecliptic coordinates. The High Source Density Bins file lists bin numbers, a flag called HSD which indicates which bands in a given bin were processed according to high source density rules, the ecliptic coordinates of the centers of the bins, and their lengths in ecliptic longitude. All bins have a height of 1° in ecliptic latitude.

Reference:
Infrared Astronomical Satellite (IRAS) Catalogs and Atlases, vol. 1, Explanatory Supplement, 1988, ed. C. Beichman, et al., NASA RP-1190 (Washington, DC: GPO)

Version and release date: 1984 Nov 16

High Source Density Bins File Format