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Proceedings Paper

Field-widened spatial heterodyne spectroscopy: correcting for optical defects and new vacuum ultraviolet performance tests
Author(s): John M. Harlander; Huan Tran; Fred L. Roesler; Kurt P. Jaehnig; Scott M. Seo; Wilton T. Sanders; Ronald J. Reynolds
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Paper Abstract

We are developing a field-widened Spatial Heterodyne Spectrometer (SHS) for suborbital observations of the hot component of the diffuse interstellar medium. Our goal for these observations is to obtain the first velocity-resolved (20 km/s) line profiles of the CIV 154.8 nm emission line from the Cygnus loop and from one direction at high galactic latitude. Long term, our interest is to develop an SHS instrument for a radial-velocity-resolved sky survey of the 105 K 'coronal gas' component of the interstellar medium using a small satellite. We describe the basic SHS technique along with vacuum ultraviolet demonstrations using our prototype interferometer. We also describe a new data reduction technique which corrects for instrumental distortions resulting from optical defects.

Paper Details

Date Published: 16 September 1994
PDF: 10 pages
Proc. SPIE 2280, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy V, (16 September 1994); doi: 10.1117/12.186821
Show Author Affiliations
John M. Harlander, St. Cloud State Univ. (United States)
Huan Tran, St. Cloud State Univ. (United States)
Fred L. Roesler, Univ. of Wisconsin/Madison (United States)
Kurt P. Jaehnig, Univ. of Wisconsin/Madison (United States)
Scott M. Seo, Univ. of Wisconsin/Madison (United States)
Wilton T. Sanders, Univ. of Wisconsin/Madison (United States)
Ronald J. Reynolds, Univ. of Wisconsin/Madison (United States)

Published in SPIE Proceedings Vol. 2280:
EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy V
Oswald H. W. Siegmund; John V. Vallerga, Editor(s)

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