16 September 1994 Field-widened spatial heterodyne spectroscopy: correcting for optical defects and new vacuum ultraviolet performance tests
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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.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
John M. Harlander, John M. Harlander, Huan Tran, Huan Tran, Fred L. Roesler, Fred L. Roesler, Kurt P. Jaehnig, Kurt P. Jaehnig, Scott M. Seo, Scott M. Seo, Wilton T. Sanders, Wilton T. Sanders, Ronald J. Reynolds, Ronald J. Reynolds, "Field-widened spatial heterodyne spectroscopy: correcting for optical defects and new vacuum ultraviolet performance tests", Proc. SPIE 2280, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy V, (16 September 1994); doi: 10.1117/12.186821; https://doi.org/10.1117/12.186821
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