FOC Point Spread Function

Details FOC Point Spread Function FOC Point Spread Function

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990hst..prop.1520p&link_type=abstract

HST Proposal ID #1520

Other

Hst Proposal Id #1520

Scientific paper

The aim is to measure the ST/FOC instrumental point spread function (PSF) in the f/96 and f/288 modes at various wavelengths using a selection of color filters. The structure of the PSF has to be measured with high photometric accuracy, otherwise it is not possible to discriminate fine structure of the PSF and fine structure that may be intrinsic to the astronomical object itself. Although the PSF is only being determined once during the SV cycle, the study may well have to be repeated in later observing cycles. Finally, the dependence of the contrast discrimination on the PSF has to be studied (for both point source and extended sources).

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