Jul 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996hst..prop.6936b&link_type=abstract
HST Proposal ID #6936
Physics
Hst Proposal Id #6936
Scientific paper
This proposal has 2 main sections: 1} GRW+70d5824 is observed shortly before and after a DECON through all the UV filters in each chip and through F160BW crossed with F130LP, F185LP, and F165LP {where applicable}. 2} BD+75D325 is observed in a subset of chips and uv filters {including Lyman alpha}, shortly before and after a Decon; to be done before SMOV. These observations will be used to determine the wavelength dependence of the throughput across the bandpass {hence color terms}. Based on the Cycle 5 UV Throughput proposal {6186} and the Cycle 4 Lyman alpha throughput proposal {5778}, this program is designed to better characterize the spectral response curve in the UV, and the spectral shape introduced by the contamination as well as provide baseline measurements in preparation for SMOV 1997. The Lyman alpha observations will provide a measure of possible contamination on the pickoff mirror. The UV throughput should be measured to better than 3%. Accuracy in the Lyman alpha throughput is expected to be between 5% and 10%, due to the residual uncertainty of the red leak correction determined from observations of F122M crossed with F130LP. Results will be presented at TIPS, in WFPC2 ISR, and used to update SYNPHOT tables if necessary. NOTE: crossed filters exposures should be observed in ALL chips after decontamination, but just in WF3 before decontamination.
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