COBE DIRBE Products

DIRBE Sky and Zodi Atlas (DSZA) and Pixel Index to DSZA

In many applications, the DSZA can be used instead of the DCAF; most of the information in the DCAF is repeated in the DSZA. However, the DSZA also includes estimates of the zodiacal light (thermal emission and scattered light from the interplanetary dust) intensity which can be compared directly with, or subtracted from, the DIRBE measurements. For example, using the DSZA, one can readily compare the apparent time variability of the sky, as observed by the DIRBE, with that of the DIRBE interplanetary dust model (Kelsall et al. 1998, ApJ, submitted), or construct sky maps like the ZSMA maps using different data selection criteria (e.g., maps based on data obtained during different weeks in the cryogenic mission). The DSZA is accompanied by a pixel index and organized in the same fashion as the DCAF. Data and model intensities from all 10 full-intensity wavelength bands appear in the DSZA. The DSZA files are on line.