Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008hst..prop11460n&link_type=abstract
HST Proposal ID #11460. Cycle 17
Astronomy and Astrophysics
Astronomy
Scientific paper
This proposal satisfies SMOV4 AD OTA/FGS-06. The observations obtain the astrometric data to calibrate the optical field angle distortion {OFAD} in FGS2r2, to the accuracy of the input astrometric catalog { 30 mas using UCAC-2}. This is a 5 orbit test that observes approximately 20 stars in the M35 cluster with the FGS in Bay #2 in Position mode using the PUPIL {since the PUPIL will be used for guiding HST}. This proposal is valid for late August through late December at the Orient needed for the observations. It is assumed that the AMA adjustments have been completed, and that an update to the FGS2-FGS alignment {which need be accuate only to about 4"} has been made {derived from the AMA data} prior to the execution of this proposal.;
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