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

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

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005hst..prop10757n&link_type=abstract

HST Proposal ID #10757

Physics

Hst Proposal Id #10757

Scientific paper

This proposal obtains reference point source Transfer Functions {S-Curves} for FGS1r through the F583W filter and the F5ND attenuator at the center position of the FGS1r FOV for a variety of stars of different spectral types. 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 size and shape of extended sources. This proposal observes stars that have been observed in previous cycles to monitor the long term evolution of the FGS1r S-curves. This proposal also {1} monitors the FGS1r Lateral Color response {using stars Latcol-A and Latcol-B}, {2} calibrates the "Pos/Trans" bias of a star's position as determined from Transfer mode and Position mode observations, and {3} calibrates the shift of a star's centroid when observed with F5ND relative to that when observed with F583W.

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