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18 July 2000 Measurements with the Chandra X-ray Observatory's flight contamination monitor
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Abstract
NASA's Chandra X-ray Observatory includes a Flight Contamination Monitor (FCM), a system of 16 radioactive calibration sources mounted to the inside of the Observatory's forward contamination cover. The purpose of the FCM is to verify the ground-to-orbit transfer of the Chandra flux scale, through comparison of data acquired during the ground calibration with those obtained in orbit, immediately prior to opening the Observatory's sun-shade door. Here we report results of these measurements, which place limits on the change in mirror-detector system response and, hence, on any accumulation of molecular contamination on the mirror's iridium-coated surfaces.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ronald F. Elsner, Jeffery J. Kolodziejczak, Stephen L. O'Dell, Douglas A. Swartz, Allyn F. Tennant, and Martin C. Weisskopf "Measurements with the Chandra X-ray Observatory's flight contamination monitor", Proc. SPIE 4012, X-Ray Optics, Instruments, and Missions III, (18 July 2000); https://doi.org/10.1117/12.391600
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