Understanding the NICMOS darks

Details Understanding the NICMOS darks Understanding the NICMOS darks

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997hstc.work..240b&link_type=abstract

The 1997 HST Calibration Workshop with a New Generation of Instruments, p. 240

Computer Science

2

Dark Current, Near Infrared Radiation, Calibrating, Cameras, Image Processing, Imaging Spectrometers, Amplifier Design, Pixels, Signal Detection, Spacecraft Instruments

Scientific paper

This paper describes the characteristics of the "dark current" for the Near-Infrared and Multi-Object Spectrometer (NICMOS) flight detectors, namely the instrumental signal present in exposures made in the absence of any external illumination. We show how this comprises three distinct components - the shading, amplifier glow, and the true dark current. We then describe a recipe for generating "synthetic" dark current calibration reference files, which could in principle be used to generate darks for any arbitrary sequence of MULTIACCUM reads.

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