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Proceedings Paper

Ultralow-background operation of near-infrared detectors using reference pixels for NGST
Author(s): Bernard J. Rauscher; Donald Frank Figer; Michael W. Regan; Louis E. Bergeron; Jesus C. Balleza; Robert H. Barkhouser; Gretchen R. Greene; Sungsoo Kim; Stephan Robert McCandliss; Ernie Morse; Russell Pelton; Thomas Reeves; Utkarsh Sharma; P. Stemniski; Hervey S. Stockman; M. Telewicz
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Paper Abstract

The Next Generation Space Telescope (NGST) Project is developing a new generation of near-infrared (NIR; λ=0.6-5 μm) array detectors optimized for ultra-low space-based backgrounds. NASA has selected the Independent Detector Testing Laboratory (IDTL) at the Space Telescope Science Institute (STScI) and the Johns Hopkins University to assist in testing and characterizing NGST's near-infrared detectors. In the IDTL, we have begun to explore how reference pixels might be used to calibrate infrared array data. Here we report some early results from these studies. Results to date are very encouraging, particularly with regard to techniques using temporal or spatial averaging to compute low-noise reference levels before making row-by-row reference pixel corrections. We explored the effectiveness of four potential calibration strategies using a shorting resistor installed where the detector would normally mount and are currently validating the techniques presented here using candidate NGST detectors.

Paper Details

Date Published: 5 March 2003
PDF: 9 pages
Proc. SPIE 4850, IR Space Telescopes and Instruments, (5 March 2003); doi: 10.1117/12.461547
Show Author Affiliations
Bernard J. Rauscher, Space Telescope Science Institute (United States)
Donald Frank Figer, Space Telescope Science Institute (United States)
John Hopkins Univ. (United States)
Michael W. Regan, Space Telescope Science Institute (United States)
Louis E. Bergeron, Space Telescope Science Institute (United States)
Jesus C. Balleza, Space Telescope Science Institute (United States)
Robert H. Barkhouser, Johns Hopkins Univ. (United States)
Gretchen R. Greene, Space Telescope Science Institute (United States)
Sungsoo Kim, Space Telescope Science Institute (United States)
Stephan Robert McCandliss, Johns Hopkins Univ. (United States)
Ernie Morse, Space Telescope Science Institute (United States)
Russell Pelton, Johns Hopkins Univ. (United States)
Thomas Reeves, Johns Hopkins Univ. (United States)
Utkarsh Sharma, Space Telescope Science Institute (United States)
P. Stemniski, Space Telescope Science Institute (United States)
Hervey S. Stockman, Space Telescope Science Institute (United States)
M. Telewicz, Space Telescope Science Institute (United States)


Published in SPIE Proceedings Vol. 4850:
IR Space Telescopes and Instruments
John C. Mather, Editor(s)

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