Other
Scientific paper
Apr 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008wfc..rept....6b&link_type=abstract
Instrument Science Report WFC3 2008-06, 4 pages
Other
Hubble Space Telescope, Hst, Space Telescope Science Institute, Wide Field Camera 3, Wfc3, Thermal Vacuum, Baffle Scatter
Scientific paper
In the first TV campaign (2004), problematic scatter was seen from the IR detector's knife-edge baffle when a point source was scanned across its edge, implying that detector's baffle was installed incorrectly. With a new detector present in the second TV campaign (2007), that scatter was greatly reduced, such that only a small glint (~1% of the source energy) could be seen when a source was scanned across the baffle edge. In the current (third) TV campaign, we repeated the test that scanned a source across the knife-edge baffle, given that yet another IR detector was installed in the instrument. The results were extremely similar to those in the previous TV campaign: faint glints (~0.5 to 1%) are present when a source hits the knife edge, but no serious scatter is seen, implying that the baffle is installed correctly and functioning as intended.
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