1982•Applied OpticsRequires access

Astronomical spectroscopy with an echelle-interferometer Cassegrain spectrograph

B. Bates, R. E. L. Bankhead, W. Brown-Kerr, F. Byrne, David Giaretta, J. A. McQuoid

Abstract

A novel Cassegrain spectrograph has been constructed which may be used to produce either echelle spectra or high-spectral resolution Fabry-Perot interferograms. A description of the spectrograph design is given, and results from first observational tests are used to discuss the merits and limitations of the technique for studies in high-resolution astronomical spectroscopy.

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Available abstract

Key concepts: Cassegrain reflector, Spectrograph, Optics, Interferometry, Spectral resolution, Physics, Spectroscopy, Fabry–Pérot interferometer