Studies of H Ly-alpha emissions in the solar neighborhood with the techniques of polarimetry and spatial heterodyne spectroscopy (SHS)

Walter M. Harris; Fred L. Roesler; Kenneth H. Nordsieck; Lotfi Ben-Jaffel; Jason Corliss

doi:10.1117/12.460029

24 February 2003 Studies of H Ly-α emissions in the solar neighborhood with the techniques of polarimetry and spatial heterodyne spectroscopy (SHS)

Walter M. Harris, Fred L. Roesler, Kenneth H. Nordsieck, Lotfi Ben-Jaffel, Jason Corliss

Author Affiliations +

Proceedings Volume 4854, Future EUV/UV and Visible Space Astrophysics Missions and Instrumentation; (2003) https://doi.org/10.1117/12.460029
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

Ultraviolet astronomy is an important tool for the study of the interplanetary medium and diffuse, angularly extended emissions in planetary/comet atmospheres and their near space environments. We describe a new technique for high étendue observations of emission lines at R > 10⁵ with an all-reflective spatial heterodyne spectrometer and polarmetric sampling of these lines with an ultraviolet optimized waveplate-Brewster mirror combination. The resulting system is themo-mechanically stable, has light collecting power substantially greater than HST for extended emissions, despite having a volume of several x 10^-3 m³. This makes the SHS polarimeter ideal for spacecraft applications. We describe the SHS and polarmetric optical techniques and provide a discussion of its planned development for studies of interplanetary hydrogen.

Citation Download Citation

Walter M. Harris, Fred L. Roesler, Kenneth H. Nordsieck, Lotfi Ben-Jaffel, and Jason Corliss "Studies of H Ly-α emissions in the solar neighborhood with the techniques of polarimetry and spatial heterodyne spectroscopy (SHS)", Proc. SPIE 4854, Future EUV/UV and Visible Space Astrophysics Missions and Instrumentation, (24 February 2003); https://doi.org/10.1117/12.460029

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