Medium-resolution echelle spectrograph design

R. Kent Honeycutt; Jeff W. Robertson; Jeff R. Pier

doi:10.1117/12.316799

9 July 1998 Medium-resolution echelle spectrograph design

R. Kent Honeycutt, Jeff W. Robertson, Jeff R. Pier

Proceedings Volume 3355, Optical Astronomical Instrumentation; (1998) https://doi.org/10.1117/12.316799
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

Time-resolved spectroscopic studies of relatively faint stars that vary on many time scales, such as interacting binary stars, benefit from a particular combination of wide wavelength coverage, medium spectral resolution, and high efficiency. We describe two similar fiber-fed echelle spectrograph designs that address this need, with an emphasis on eventual use for automated, unattended spectroscopy. The coverage is approximately 385 - 850 nm in about 25 echelle orders or approximately 350 - 500 nm in about 16 orders, each with a resolution of about 5000. Cross dispersion is supplied by two prisms in series and the collimator is an off-axis paraboloid. One of the designs incorporates white pupil optics to minimize camera vignetting in the red echelle orders.

Citation Download Citation

R. Kent Honeycutt, Jeff W. Robertson, and Jeff R. Pier "Medium-resolution echelle spectrograph design", Proc. SPIE 3355, Optical Astronomical Instrumentation, (9 July 1998); https://doi.org/10.1117/12.316799

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