6 August 2014 The DESI wide field corrector optics
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The Dark Energy Spectroscopic instrument (DESI) is a 5000 fiber multi-object spectrometer system under development for installation on the National Optical Astronomy Observatory (NOAO) Kitt Peak 4m telescope (the Mayall telescope). DESI is designed to perform a 14,000° (square) galaxy and Quasi-Stellar Object (QSO) redshift survey to improve estimates of the dark energy equation of state. The survey design imposes numerous constraints on a prime focus corrector design, including field of view, geometrical blur, stability, fiber injection efficiency, zenith angle, mass and cost. The DESI baseline wide-field optical design described herein provides a 3.2° diameter field of view with six 0.8- 1.14m diameter lenses and an integral atmospheric dispersion compensator.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Peter Doel, Peter Doel, Michael J. Sholl, Michael J. Sholl, Ming Liang, Ming Liang, David Brooks, David Brooks, Brenna Flaugher, Brenna Flaugher, Gaston Gutierrez, Gaston Gutierrez, Stephen Kent, Stephen Kent, Michael Lampton, Michael Lampton, Timothy Miller, Timothy Miller, David Sprayberry, David Sprayberry, "The DESI wide field corrector optics", Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91476R (6 August 2014); doi: 10.1117/12.2057172; https://doi.org/10.1117/12.2057172

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