Aberration corrected echelle spectrographs for the far ultraviolet

James C. Green

doi:10.1117/12.2623948

31 August 2022 Aberration corrected echelle spectrographs for the far ultraviolet

James C. Green

Proceedings Volume 12181, Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray; 121812P (2022) https://doi.org/10.1117/12.2623948
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

Ultraviolet spectroscopy is a key element in the multi-wavelength approach to astronomy. Echelle spectroscopy provides high resolution and broad wavelength coverage and is a frequent choice for optical spectroscopy. However, it has limitations when applied to ultraviolet applications, particularly in the far ultraviolet, at wavelengths shortward of the MgF2 cutoff at ~ 1150 Å. I present an approach to provide echelle spectroscopy at these short wavelengths, enabling aberration control with only two optics post-telescope, by using gratings with curved and variable line-space grooves.

Citation Download Citation

James C. Green "Aberration corrected echelle spectrographs for the far ultraviolet", Proc. SPIE 12181, Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray, 121812P (31 August 2022); https://doi.org/10.1117/12.2623948

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