WFC3 TV3 Testing: IR Channel Dark Current

Details WFC3 TV3 Testing: IR Channel Dark Current WFC3 TV3 Testing: IR Channel Dark Current

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008wfc..rept...30h&link_type=abstract

Instrument Science Report WFC3 2008-30, 10 pages

Physics

Hubble Space Telescope, Hst, Space Telescope Science Institute, Wfc3, Wide Field Camera 3, Thermal Vacuum 3, Tv3, Dark Current

Scientific paper

Using data taken during WFC3's Thermal Vacuum 3 (TV3) testing campaign, we have characterized the dark current behavior in the IR Channel, which contained IR-4 (FPA165). The Contract End Item (CEI) Specifications call for dark current to be below 0.4 e-/sec/pixel, with a goal of 0.1 e-/sec/pixel. We measure dark current values well below the spec and goal values. The longest exposure time ramps show dark current values in the 0.045 - 0.060 e-/sec/pixel range. Initial dark current calibration files will be created from these TV3 data.

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