WFC3 TV2 Testing: IR Channel Dark Current

Details WFC3 TV2 Testing: IR Channel Dark Current WFC3 TV2 Testing: IR Channel Dark Current

Jan 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008wfc..rept....3h&link_type=abstract

Instrument Science Report WFC3 2008-03, 22 pages

Physics

Hubble Space Telescope, Hst, Space Telescope Science Institute, Wide Field Camera 3, Wfc3, Thermal Vacuum 2, Tv2, Ir Channel, Dark Current

Scientific paper

Using data taken during WFC3's Thermal Vacuum 2 (TV2) testing campaign, we have characterized the dark current in the IR Channel, which contained IR-1 (FPA129). Data were taken using all supported sample sequences. Gaussian fits to dark current histograms reveal peak values between 0.022 - 0.095 e-/sec/pixel at an operating temperature of -123°C. The range of values decreases to 0.019 - 0.057 e-/sec/pixel at - 125.4°C. Both of these temperatures are above the nominal on-orbit operating temperature of -128°C. Sample sequences with the longest exposure times (and highest SNR) returned values at the low end of this range. Sample sequences with shorter exposure times returned values in the upper part of this range. Subarray ramps showed behavior consistent with the full frame ramps. Peak dark current values were observed to decrease 15 - 20% for a decrease in FPA temperature of 2.5°C.

Affiliated with

Also associated with

No associations

Rating

WFC3 TV2 Testing: IR Channel Dark Current does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with WFC3 TV2 Testing: IR Channel Dark Current, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and WFC3 TV2 Testing: IR Channel Dark Current will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1258839