A variable-tune spatial heterodyne spectrometer for broadband spectral line studies in the visible and near-UV

Olivia R. Dawson, Walter M. Harris

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Reflective Spatial Heterodyne Spectroscopy (SHS) is an interferometric technique that combines high resolving power and a large input acceptance angle in a format that is compact enough for use at small telescope focal planes and in spacecraft observations of targets in the visible to far ultra-violet (FUV) spectral range. SHS instruments are well suited to the study of faint, extended emission line sources, particularly in the UV where stellar background continuum becomes weak. Their primary limitation comes from the limited spatial sampling of the output interference pattern generated by the incoming spectral source, which limits their use to narrow bandpass near the central tuning wavelength. We describe a the first light results from a broadband SHS that can be used to scan the tuning wavelength across a bandpass extending from 300 to 700 nm. The limitations on the bandpass are arbitrary and can easily be extended into the UV or near infrared. We discuss the results of these validation program and the potential improvements that could be used to expand and/or improve the broadband spectral response of the instrument.

Original languageEnglish (US)
Title of host publicationInternational Conference on Space Optics, ICSO 2008
EditorsJosiane Costeraste, Errico Armandillo, Nikos Karafolas
ISBN (Electronic)9781510616219
StatePublished - 2017
EventInternational Conference on Space Optics 2008, ICSO 2008 - Toulouse, France
Duration: Oct 14 2008Oct 17 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherInternational Conference on Space Optics 2008, ICSO 2008

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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