Volume-phase holographic spectrograph for the Magellan telescopes

Gary M. Bernstein; Alex Edward Athey; Rebecca Bernstein; Steven M. Gunnels; Douglas O. Richstone; Stephen A. Shectman

doi:10.1117/12.454281

30 January 2002 Volume-phase holographic spectrograph for the Magellan telescopes

Gary M. Bernstein, Alex Edward Athey, Rebecca Bernstein, Steven M. Gunnels, Douglas O. Richstone, Stephen A. Shectman

Proceedings Volume 4485, Optical Spectroscopic Techniques, Remote Sensing, and Instrumentation for Atmospheric and Space Research IV; (2002) https://doi.org/10.1117/12.454281
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

We present the design for an optical spectrograph for the 6.5-meter Magellan II Telescope. The spectrograph covers the full visible spectrum in a single exposure at very high efficiency through a dual-channel design and the use of volume phase holographic (VPH) gratings in lieu of traditional surface gratings. A pair of symmetric fold mirrors about the grating keep the spectrograph in Littrow configuration, eliminating the need for an articulated camera. Efficient VPH prescriptions have been developed for all resolution modes up to R=11,000. The resulting design is, mechanically and optically, relatively simple, compact, and inexpensive.

Citation Download Citation

Gary M. Bernstein, Alex Edward Athey, Rebecca Bernstein, Steven M. Gunnels, Douglas O. Richstone, and Stephen A. Shectman "Volume-phase holographic spectrograph for the Magellan telescopes", Proc. SPIE 4485, Optical Spectroscopic Techniques, Remote Sensing, and Instrumentation for Atmospheric and Space Research IV, (30 January 2002); https://doi.org/10.1117/12.454281

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