Cool-D Verification of the RGS Calibration
收藏ESA Earth Online2026-06-22 收录
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Both RGS instruments were cooled and recalibrated in November 2002 usingMkn421 as reference source of bright smooth continuum to illuminate thewhole bandwidth of the detectors. Mkn421 becomes visible again in May2003 when it should be observed again in two long exposures to verify theresponse of the entire detector assembly in a way which is not possiblewith the linerich SNR calibrators such as N132D, which have weak continua.
