The WFC3 Exposure Time Calculators:Functionality and Operations

Details The WFC3 Exposure Time Calculators:Functionality and Operations The WFC3 Exposure Time Calculators:Functionality and Operations

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000wfc..rept....2h&link_type=abstract

Instrument Science Report WFC3-2000-002, 40 pages

Physics

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

Scientific paper

We describe the current version of the WFC3 Exposure Time Calculators (ETCs) from an operations and user support point of view. The WFC3 ETCs consist of two independent engines,one for the ultraviolet/visible (UVIS) channel and one for the infrared (IR) channel. The ETCs rely upon the IRAF STSDAS SYNPHOT task COUNTRATE as the basis for their signal-to-noise and exposure time calculations.

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