Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992hst..prop.4765j&link_type=abstract
HST Proposal ID #4765
Astronomy and Astrophysics
Astronomy
Hst Proposal Id #4765 N/A
Scientific paper
The goal of these activities is to determine the optical field angle distortions of FGS units #3 to within an arbitrary scale factor, with a level of accuracy sufficient to support an overall astrometry error budget of +/- 0.0027 arcseconds rms. The actual solutions will provide the Project Data Base with the significant terms, their values, and their covariances including errors, which may then be applied to general FGS observations to reduce them for field angle distortions, except scale, alignment, and color corrections. THIS PROPOSAL ASSUMES THAT FGS#3 IS THE PRIME UNIT.
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