ABOUT LAMBDA

COBE

Cosmic Background Explorer/DIRBE

Product Name
Beam Profile Maps
Mission
COBE/DIRBE

Description

The DIRBE beam profiles are provided in a set of 16 FITS (image) files, one file for each of the 10 full intensity bands, plus `B' and `C' polarization channels for the three short-wavelength bands. As explained in the DIRBE Explanatory Supplement, the beam profile in bands 1 - 4 changed slightly with time during the mission; the FITS files for these bands each contain three beam maps corresponding to three time intervals. The Beam Profile Maps are on line and will later be provided on CD-ROM.

Beam offsets and solid angles are given in Table 4.2-1 of the DIRBE Explanatory Supplement, and also, for convenience, in an ASCII table.

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A service of the HEASARC and of the Astrophysics Science Division at NASA/GSFC
Goddard Space Flight Center, National Aeronautics and Space Administration
HEASARC Director: Dr. Alan P. Smale
LAMBDA Director: Dr. Eric R. Switzer
NASA Official: Dr. Eric R. Switzer
Web Curator: Mr. Michael R. Greason