Other
Scientific paper
Sep 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007wfc..rept...19b&link_type=abstract
Instrument Science Report WFC3 2007-19, 10 pages
Other
Hubble Space Telescope, Hst, Space Telescope Science Institute, Wide Field Camera 3, Wfc3, Tv Test, Thermal Vacuum Test
Scientific paper
Thermal-vacuum (TV) level tests using the integrated WFC3 instrument, with the UVIS-2 detector in place, were performed at Goddard Space Flight Center (GSFC) during the summer of 2007. Data were acquired to allow an absolute gain measurement using the mean-variance method at the nominal gain 1.5 setting, with a CCD operating temperature of -78o C, for both unbinned and binned modes. In addition, data were taken to allow a check of the gain ratios between the standard 1.5 setting and the other three available settings (nominally 1.0, 2.0, and 4.0 e-/DN), at two different temperatures. For unbinned images, taken with the CCD at -78o C, the gains were measured at 1.57, 1.54, 1.63, 1.59 e-/DN, for quadrants A, B, C, and D, respectively, with errors ~0.01 e-/DN. These values are 1-2% lower than the gains measured with the CCD at -54o C during ambient testing (Baggett, 2007). TV gain values for the binned modes were generally within 1% of the unbinned mode gain, though systematically slightly lower than the unbinned mode gain. Finally, the gains for the other three settings, at -78o C and assuming 1.5 e-/DN for the default gain, were found to be, on average, 1.03, 2.11, and 4.30 e-/DN. Within the errors, the relative gains measured at the cooler temperature (-81.5o C) were the same as those at the warmer temperature.
No associations
LandOfFree
WFC3 TV2 Testing: UVIS-2 Gain Results 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: UVIS-2 Gain Results, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and WFC3 TV2 Testing: UVIS-2 Gain Results will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1295754