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Proceedings Paper

Chandra HRC-S degapping corrections
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Paper Abstract

The HRC-S is a microchannel plate detector on board Chandra and is primarily used for spectroscopic observations with the Low Energy Transmission Grating Spectrometer (LETGS) in place. Photons are detected via signals read out from evenly spaced wires underneath the plates and positions are computed by centroiding around the strongest amplifier signals. This process leads to gaps in between the taps where no events are placed. A deterministic correction is then made during ground processing to these event locations to remove the gaps. We have now developed a new, empirical degap corrections from flight data. We describe the procedure we use, present comparisons between the new degap and lab-data based degap, and investigate the temporal stability of the degap corrections.

Paper Details

Date Published: 11 October 2004
PDF: 9 pages
Proc. SPIE 5488, UV and Gamma-Ray Space Telescope Systems, (11 October 2004); doi: 10.1117/12.551790
Show Author Affiliations
Vinay L. Kashyap, Chandra X-ray Ctr./Smithsonian Astronomical Observatory (United States)
Jeremy J. Drake, Chandra X-ray Ctr./Smithsonian Astronomical Observatory (United States)
Sun Mi Chung, Chandra X-ray Ctr./Smithsonian Astronomical Observatory (United States)


Published in SPIE Proceedings Vol. 5488:
UV and Gamma-Ray Space Telescope Systems
Guenther Hasinger; Martin J. L. Turner, Editor(s)

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