Charge Transfer Inefficiency Over The History Of The ACS WFC Instrument Of The HST

Details Charge Transfer Inefficiency Over The History Of The ACS WFC Instrument Of The HST Charge Transfer Inefficiency Over The History Of The ACS WFC Instrument Of The HST

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21725414f&link_type=abstract

American Astronomical Society, AAS Meeting #217, #254.14; Bulletin of the American Astronomical Society, Vol. 43, 2011

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Scientific paper

We have examined multiple epochs of data extending from April 2002, up through June 2010, from the Hubble Space Telescope's (HST) Advanced Camera for Surveys (ACS) Wide Field Channel (WFC), in effort to determine the charge transfer efficiency loss, (also known as charge transfer inefficiency: CTI), during the time this instrument has spent on-orbit. With special attention paid to the calibration data of the post Servicing Mission 4 (SM4) period, and in lieu of the gross abundance of calibration darks taken throughout the history of the ACS WFC, there existed a large and conclusive database of information as to the development of these notorious trails arising from CTI. The CTI trails extend from warm pixels much the same, and as reproducibly predictable, as the bleeding flux from point sources, with which we are all unfortunately so well acquainted. The growth and evolution of these trails, that proceed from, and downstream to, these recurrent warm pixels, has grown in a nonlinear fashion in both magnitude and shape relative to time elapsed on-orbit. We present an archive of CTI trails found throughout eight and a half years of ACS WFC orbit time, along with the chronological trends found therein.

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