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Proceedings Paper

A Two-Dimensional Intensified Photodiode Array For Imaging Spectroscopy
Author(s): P. D. Tennyson; K. Dymond; H. W. Moos; P. D. Feldman; E. F. Mackey
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Paper Abstract

The Johns Hopkins University is currently developing an instrument to fly aboard NASA's space shuttle as a SPARTAN payload in the late 1980's. This SPARTAN free flyer will obtain spatially resolved spectra of faint extended emission line objects in the wavelength range 750 -1150 Å at ~2 Å resolution. The targets selected for the first mission of the payload include the Io plasma torus around Jupiter and the Cygnus Loop supernova remnant. The use of two-dimensional photon counting detectors will give simultaneous coverage of the 400 A spectral range and the 9 arcminute spatial resolution along the spectrometer slit. The progress towards the flight detector is reported here with preliminary results from a laboratory breadboard detector, and a comparison with the one-dimensional detector developed for the Hopkins Ultraviolet Telescope (HUT) 3. A hardware digital centroiding algorithm has been successfully implemented. The system is ultimately capable of 15 pm resolution in two dimensions at the image plane and can han-dle continuous counting rates of up to 8000 counts s -1.

Paper Details

Date Published: 13 October 1986
PDF: 8 pages
Proc. SPIE 0627, Instrumentation in Astronomy VI, (13 October 1986); doi: 10.1117/12.968145
Show Author Affiliations
P. D. Tennyson, The Johns Hopkins University (United States)
K. Dymond, The Johns Hopkins University (United States)
H. W. Moos, The Johns Hopkins University (United States)
P. D. Feldman, The Johns Hopkins University (United States)
E. F. Mackey, Spacom Electronics, Inc. (United States)

Published in SPIE Proceedings Vol. 0627:
Instrumentation in Astronomy VI
David L. Crawford, Editor(s)

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