HST Cycle 15 & pre-SM4 Optical Monitor

Details HST Cycle 15 & pre-SM4 Optical Monitor HST Cycle 15 & pre-SM4 Optical Monitor

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006hst..prop11020l&link_type=abstract

HST Proposal ID #11020. Cycle 15

Physics

Scientific paper

The focus of HST is measured primarily by observing HD93250 with ACS/HRC over full CVZ orbits to obtain accurate mean focus values via a well sampled breathing curve. Coma and astigmatism are also determined from the same data in order to further understand orbital effects on image quality and optical alignments. To monitor the stability of ACS to WFPC2 relative focii, we execute parallel observations taken with the two cameras at suitable orientations of previously observed targets, and interspersed them with the HRC CVZ visits.

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