The optical design of the G-CLEF Spectrograph: the first light instrument for the GMT

Sagi Ben-Ami; Jeffrey D. Crane; Ian Evans; Stuart McMuldroch; Mark Mueller; William Podgorski; Andrew Szentgyorgyi

doi:10.1117/12.2313381

12 July 2018 The optical design of the G-CLEF Spectrograph: the first light instrument for the GMT

Sagi Ben-Ami, Jeffrey D. Crane, Ian Evans, Stuart McMuldroch, Mark Mueller, William Podgorski, Andrew Szentgyorgyi

Proceedings Volume 10702, Ground-based and Airborne Instrumentation for Astronomy VII; 107029K (2018) https://doi.org/10.1117/12.2313381
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

The GMT-Consortium Large Earth Finder (G-CLEF), one of the first light instruments for the Giant Magellan Telescope (GMT), is a fiber-fed, high-resolution echelle spectrograph. G-CLEF is expected to proceed towards fabrication in the coming months. In this paper, we present the current, pre-construction G-CLEF optical design, with an emphasis on the innovative features derived for the spectrograph fiber-feed, the implementation of a volume-phase holographic (VPH)- based cross disperser with enhanced blue throughput and our novel solutions for a multi-colored exposure meter and a flat-fielding system.

Citation Download Citation

Sagi Ben-Ami, Jeffrey D. Crane, Ian Evans, Stuart McMuldroch, Mark Mueller, William Podgorski, and Andrew Szentgyorgyi "The optical design of the G-CLEF Spectrograph: the first light instrument for the GMT", Proc. SPIE 10702, Ground-based and Airborne Instrumentation for Astronomy VII, 107029K (12 July 2018); https://doi.org/10.1117/12.2313381

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available