CSM Particulate Investigation

Details CSM Particulate Investigation CSM Particulate Investigation

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005wfc..rept...26b&link_type=abstract

Instrument Science Report WFC3 2005-26, 7 pages

Physics

Hubble Space Telescope, Hst, Space Telescope Science Institute, Wfc3, Wide Field Camera 3

Scientific paper

The WFC3 Channel Select Mechanism (CSM) mirror currently has a population of particulates (dust) on its surface, which was first discovered via IR channel flat field images obtained during WFC3 thermal-vacuum testing in the Fall of 2004. The particulates affected nearly 5000 pixels of the IR detector at the time of thermal-vac testing and subsequent investigation indicates that the population may have grown since then. Analysis of the potential impact of the particulates indicates that significant effort to clean and maintain the cleanliness of the CSM mirror is warranted.

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