Computer Science – Performance
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008wfc..rept...10b&link_type=abstract
Instrument Science Report WFC3 2008-10, 63 pages
Computer Science
Performance
Hubble Space Telescope, Hst, Space Telescope Science Institute, Wide Field Camera 3, Wfc3, Thermal Vacuum Testing, Uvis Flight Detector
Scientific paper
During the most recent WFC3 thermal vacuum (TV) testing campaign, it was discovered that the outer window of the UVIS flight detector (UVIS-1- ) is contaminated. The contamination appears to be the mineral residue of an earlier condensation event which has been traced to a period of acceptance testing at Ball Aerospace. These features have been dubbed "droplets" due to their appearance at the time of discovery. We characterized the impact of these features on UVIS channel performance with a series of tests using both point source and flat-field illumination. In large-aperture (10 pixel radius) photometry of point sources stepped across a strong window feature, the feature does not significantly increase the photometric scatter. For small-aperture (3 pixel radius) photometry of point sources stepped across a strong window feature, the photometric scatter increases from ~0.5% to ~1%, with little to no mitigation via flat-fielding, because light in the core of the point spread function is redirected to the near wings. However, the effect of these droplets can be mitigated through appropriate dithering of observations.
Baggett Sylvia
Brown Thomas M.
Hartig George
No associations
LandOfFree
WFC3 TV3 Testing: UVIS Window Contamination 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 TV3 Testing: UVIS Window Contamination, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and WFC3 TV3 Testing: UVIS Window Contamination will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1077572