Filter Throughputs for WFC3 SYNPHOT Support

Details Filter Throughputs for WFC3 SYNPHOT Support Filter Throughputs for WFC3 SYNPHOT Support

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006wfc..rept....3b&link_type=abstract

Instrument Science Report WFC3 2006-03, 84 pages

Other

Hubble Space Telescope, Hst, Space Telescope Science Institute, Wide Field Camera 3, Wfc3, Filter Throughputs, Synphot

Scientific paper

To provide support for WFC3 in the SYNPHOT package, I have combined the measurements made of the WFC3 filters into a single throughput curve for each filter. Each filter was scanned twice, to characterize "in band" sensitivity and "out of band" sensitivity. The "out of band" measurements were typically done at much lower resolution than the "in band" measurements, which makes it difficult to combine these measurements when the throughput is changing rapidly in the region of overlap. Fortunately, this transition region from one type of measurement to another does not comprise a significant fraction of the integrated throughput of the filter, so in practice this mismatch in resolution should not affect the interpretation of photometric data or the prediction of count rates in the various observing modes. The purpose of this report is simply to record the details of how the distinct measurements for each filter were merged.

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