The DESI fiber system

Claire Poppett; Ray Sharples; Jerry Edelstein; Jurgen Schmoll; David Bramall

doi:10.1117/12.2312176

9 July 2018 The DESI fiber system

Claire Poppett, Ray Sharples, Jerry Edelstein, Jurgen Schmoll, David Bramall

Author Affiliations +

Proceedings Volume 10702, Ground-based and Airborne Instrumentation for Astronomy VII; 107027O (2018) https://doi.org/10.1117/12.2312176
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

The Dark Energy Spectroscopic Instrument (DESI) is under construction to measure the expansion history of the Universe using the Baryon Acoustic Oscillation technique. The spectra of 35 million galaxies and quasars over 14000 sq deg will be measured during the life of the experiment. A new prime focus corrector for the KPNO Mayall telescope will deliver light to 5000 fiber optic positioners. The fibers in turn feed ten broad-band spectrographs. We will describe the design and performance of the DESI fiber system. This includes 5000 custom positioner fiber assemblies, spliced to 10 fiber cables terminated in a slit array.

Citation Download Citation

Claire Poppett, Ray Sharples, Jerry Edelstein, Jurgen Schmoll, and David Bramall "The DESI fiber system", Proc. SPIE 10702, Ground-based and Airborne Instrumentation for Astronomy VII, 107027O (9 July 2018); https://doi.org/10.1117/12.2312176

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