Measurements with the Chandra X-ray Observatory's flight contamination monitor

Ronald F. Elsner; Jeffery J. Kolodziejczak; Stephen L. O'Dell; Douglas A. Swartz; Allyn F. Tennant; Martin C. Weisskopf

doi:10.1117/12.391600

18 July 2000 Measurements with the Chandra X-ray Observatory's flight contamination monitor

Ronald F. Elsner, Jeffery J. Kolodziejczak, Stephen L. O'Dell, Douglas A. Swartz, Allyn F. Tennant, Martin C. Weisskopf

Author Affiliations +

Proceedings Volume 4012, X-Ray Optics, Instruments, and Missions III; (2000) https://doi.org/10.1117/12.391600
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

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.

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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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