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Proceedings Paper

High-resolution spectral imaging of the Sun in the far ultraviolet
Author(s): Marilyn E. Bruner; Theodore D. Tarbell; Alan M. Title; Jean-Pierre Wuelser; Brian N. Handy; Muamer Zukic
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Paper Abstract

The Transition Region and Coronal Explorer instrument (TRACE) will use narrow-band interference filters together with other appropriate band limiting elements to make high resolution images of the Sun in the C IV lines at 154.8 and 155.0 nm. Filter observations of solar C IV emission are complicated by the presence of UV Continuum and nearby chromospheric lines because of the relatively wide bandpasses of the narrowest currently available interference filters. TRACE will use a series of filters to estimate the effects of the UV continuum and the long-wavelength `leaks' in the blocking filters which we show are the most important contaminants in the C IV images. Further improvements in filtergraph performance may be realized through the use of tunable Fabry-Perot etalons, which have been under development at Lockheed-Martin. We present test data from a cultured quartz etalon designed for 155 nm, and will discuss the prospects for etalons operation at substantially shorter wavelengths.

Paper Details

Date Published: 25 November 1996
PDF: 11 pages
Proc. SPIE 2804, Missions to the Sun, (25 November 1996); doi: 10.1117/12.259718
Show Author Affiliations
Marilyn E. Bruner, Lockheed Martin Advanced Technology Ctr. (United States)
Theodore D. Tarbell, Lockheed Martin Advanced Technology Ctr. (United States)
Alan M. Title, Lockheed Martin Advanced Technology Ctr. (United States)
Jean-Pierre Wuelser, Lockheed Martin Advanced Technology Ctr. (United States)
Brian N. Handy, Montana State Univ. (United States)
Muamer Zukic, Cascade Optical Coatings, Inc. (United States)

Published in SPIE Proceedings Vol. 2804:
Missions to the Sun
David M. Rust, Editor(s)

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