Calibrating FGS1r's Interferometric Response as a Function of Spectral Color

Details Calibrating FGS1r's Interferometric Response as a Function of Spectral Color Calibrating FGS1r's Interferometric Response as a Function of Spectral Color

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001hst..prop.8898n&link_type=abstract

HST Proposal ID #8898

Physics

Hst Proposal Id #8898

Scientific paper

The purpose of this proposal is to obtain reference point source Transfer Functions {S-Curves} through the F583W filter and the F5ND attenuator at the center position of the FGS1r FOV for a variety of stellar spectral colors. The data obtained in this proposal will be added to the library of point source interferograms that was assembled from the Cycles 8 and 9 calibration program. These Transfer Functions are needed to support the analysis of GO science data for the study of close and wide binary star systems and for determining the angular diameter of extended sources. This proposal observes 2 stars at two different times seperated by about 6 months to check for long term temporal stability of the FGS1r S-curves. This proposal also checks the cycle 9 calibration the FGS1r Lateral Color response, as well as calibrates the "Pos/Trans" bias of a star's position as determined from Transfer mode and Position mode observations.

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