WFC3 TV2 Testing: IR Channel Ghosts and Baffle Scatter

Details WFC3 TV2 Testing: IR Channel Ghosts and Baffle Scatter WFC3 TV2 Testing: IR Channel Ghosts and Baffle Scatter

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007wfc..rept...16b&link_type=abstract

Instrument Science Report WFC3 2007-16, 8 pages

Physics

Hubble Space Telescope, Hst, Space Telescope Science Institute, Wide Field Camera 3, Wfc3, Tv Test, Thermal Vacuum Test

Scientific paper

I review the tests for optical ghosts and baffle scatter on the IR channel, as performed during the second thermal-vacuum (TV) campaign of WFC3. In the first TV campaign, no significant optical ghosts were found in any of the filters, but some problematic scatter was seen from the detector's knife-edge baffle. Since then, the detector and three of the filters were replaced, and the current instrument shows no significant ghosts in any of the filters and no significant scatter from the baffle. When a source is scanned across the baffle edge, a small glint can be seen, extending up to 100 pixels and containing up to 1% of the source energy.

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