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Proceedings Paper

The operational response to temporal changes in the gain of the ACIS instrument on the Chandra X-ray Observatory
Author(s): Nancy R. Adams-Wolk; Royce Buehler; Paul P. Plucinksy
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Paper Abstract

The gain of the Advanced CCD Imaging Spectrometer (ACIS) instrument has changed over time since the Chandra X-ray Observatory launch in July 1999. The calibration and data analysis teams have addressed this issue, but it has only been recently that the operations team has examined how the commanding of the instrument could be altered to partially compensate for these changes. This paper will address the changes in the gain, the impact on science data and the changes the operations team has considered to improve the science return. We also discuss the restrictions imposed by the commanding software on our response.

Paper Details

Date Published: 30 June 2006
PDF: 8 pages
Proc. SPIE 6270, Observatory Operations: Strategies, Processes, and Systems, 62701H (30 June 2006); doi: 10.1117/12.670910
Show Author Affiliations
Nancy R. Adams-Wolk, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Royce Buehler, MIT Kavli Institute for Astrophysics and Space Research (United States)
Paul P. Plucinksy, Harvard-Smithsonian Ctr. for Astrophysics (United States)


Published in SPIE Proceedings Vol. 6270:
Observatory Operations: Strategies, Processes, and Systems
David R. Silva; Rodger E. Doxsey, Editor(s)

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