IRAS Explanatory Supplement
XI. Known Processing Anomalies
C. Frequency Dependence of Responsivity with Amplitude
Table of Contents | Index | Previous Section | Next Section
The observations described in Section IV.A.4 established that flux densities greater than 10 Jy at 60 and 100 µm are in error of at least 30% at 60 µm and up to 70% at 100 µm because the responsivity of the detectors varied with the total flux on the detectors. This effect depends on the background as well as on the brightness of the source itself. The photometry of any source in a background greater than 10 MJy sr-1 at 60 and 100 µm is therefore suspect.
Table of Contents | Index | Previous Section | Next Section