Improved Reprocessing of the IRAS Survey (IRIS) Overview
IRIS Overview IRIS Data Access IRIS Cutouts


This new generation of IRAS images, called IRIS, benefits from better zodiacal light subtraction, calibration and zero levels compatible with DIRBE, and better destriping. At 100 microns, the IRIS product is also a significant improvement over the Schlegel et al. (1998) maps. IRIS keeps the full ISSA resolution, includes well calibrated point sources, and the diffuse emission calibration at scales smaller than 1 degree was corrected for the variation of the IRAS detector responsivity with scale and brightness. The uncertainty on the IRIS calibration and zero levels is dominated by the uncertainty of the DIRBE calibration and the accuracy of the zodiacal light model. IRIS includes co-added maps (H0) as well as maps from each individual survey (H1, H2, H3).

If you use IRIS data, please cite the dataset Digital Object Identifier (DOI): 10.26131/IRSA94.

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Data Set Characteristics

Data ProductDescriptionData Access
Images IRAS Survey Array 12, 25, 60, 100 micron

IRIS Documentation