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Proceedings Paper

Ultraviolet Spectrographs Using Linear Array Technology
Author(s): J. S. Hansen; G. H. Fountain; S. A. Gary; T. J. Harris; K. L. Harrison; S. E. Hawkins III
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Paper Abstract

Two 0.125 meter low resolution spectrographs have been built covering the wavelength ranges of 125 - 231 nm and 180 - 339 nm. Each spectrograph was designed to have high sensitivity, large dynamic range, and modest spectral resolution. There were hard design constraints on collecting area and pointing knowledge. These spectrographs measured the spectrum using a linear array. The wavelength conversion was done via an image intensifier, converting a UV spectrum to green light. The spectrographs had a 0.5° nearly circular field of view with resolutions of <2 nm. After electronics processing, the spectrograph output consisted of a 128 bin spectrum every 0.2 seconds (one scan). The minimum sensitivity was 10 photons/cm2- sec. in a single output scan. With the use of a neutral density filter and an image intensifier automatic range system, the spectrographs had a dynamic range of >109.

Paper Details

Date Published: 28 December 1989
PDF: 8 pages
Proc. SPIE 1158, Ultraviolet Technology III, (28 December 1989); doi: 10.1117/12.962539
Show Author Affiliations
J. S. Hansen, The Johns Hopkins University (United States)
G. H. Fountain, The Johns Hopkins University (United States)
S. A. Gary, The Johns Hopkins University (United States)
T. J. Harris, The Johns Hopkins University (United States)
K. L. Harrison, The Johns Hopkins University (United States)
S. E. Hawkins III, The Johns Hopkins University (United States)

Published in SPIE Proceedings Vol. 1158:
Ultraviolet Technology III
Robert E. Huffman, Editor(s)

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