ACS Coronagraph Performance in Two-Gyro Mode

Details ACS Coronagraph Performance in Two-Gyro Mode ACS Coronagraph Performance in Two-Gyro Mode

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005acs..rept....7c&link_type=abstract

Instrument Science Report ACS 2005-05, 7 pages

Computer Science

Performance

Hubble Space Telescope, Hst, Space Telescope Science Institute, Advanced Camera For Surveys, Acs, Acs Coronagraph

Scientific paper

In February 2005, as part of a study of HST performance using two gyroscopes instead of three, the ACS coronagraph was exercised in two-gyro mode and its quality compared with that in the normal three-gyro operational mode. This is a sensitive test since an inaccurate location or a small pointing instability when a target was behind the coronagraphic spot would make a significant difference to the image. No degradation of performance was detected either by inspection of the images or detailed analysis.

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