NICMOS Flats and temperature dependence of the DQE

Details NICMOS Flats and temperature dependence of the DQE NICMOS Flats and temperature dependence of the DQE

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001hst..prop.8974b&link_type=abstract

HST Proposal ID #8974

Physics

Hst Proposal Id #8974

Scientific paper

The purpose of this proposal is to obtain initial estimates of the detective quantum efficiency {DQE} of the NICMOS detectors and its temperature dependence in the previously uncharted temperature regime expected for operation under the NICMOS Cooling System {NCS}. The observations will measure the relative {via flat field morphology} and absolute DQE variation at three temperature setpoints. In addition, they will provide a monitor for particulate contamination {"Grot"} and detector lateral position {from the coronagraphic spot and FDA vignetting}. When stars are present in the field of view, they will enable a preliminary focus determination.

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