High-resolution spectral imaging of the Sun in the far ultraviolet

Marilyn E. Bruner; Theodore D. Tarbell; Alan M. Title; Jean-Pierre Wuelser; Brian N. Handy; Muamer Zukic

doi:10.1117/12.259718

25 November 1996 High-resolution spectral imaging of the Sun in the far ultraviolet

Marilyn E. Bruner, Theodore D. Tarbell, Alan M. Title, Jean-Pierre Wuelser, Brian N. Handy, Muamer Zukic

Proceedings Volume 2804, Missions to the Sun; (1996) https://doi.org/10.1117/12.259718
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

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.

Citation Download Citation

Marilyn E. Bruner, Theodore D. Tarbell, Alan M. Title, Jean-Pierre Wuelser, Brian N. Handy, and Muamer Zukic "High-resolution spectral imaging of the Sun in the far ultraviolet", Proc. SPIE 2804, Missions to the Sun, (25 November 1996); https://doi.org/10.1117/12.259718

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KEYWORDS

Fabry–Perot interferometers

Ultraviolet radiation

Image filtering

Optical filters

Interference filters

Sun

Mirrors

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