Performance of the Dark Energy Spectroscopic Instrument (DESI) focal plane

Parker Fagrelius; Yutong Duan; Kevin Fanning; Klaus Honscheid; Steven Kent; Paul Martini; Claire Poppett; David Rabinowitz; Michael Schubnell; Joseph Silber; David Brooks; Todd Claybaugh; Peter Doel; Enrique Gaztañaga; Michael Levi; Christophe Magneville; Francisco Prada; Greg Tarlé

doi:10.1117/12.2561631

13 December 2020 Performance of the Dark Energy Spectroscopic Instrument (DESI) focal plane

Parker Fagrelius, Yutong Duan, Kevin Fanning, Klaus Honscheid, Steven Kent, Paul Martini, Claire Poppett, David Rabinowitz, Michael Schubnell, Joseph Silber, David Brooks, Todd Claybaugh, Peter Doel, Enrique Gaztañaga, Michael Levi, Christophe Magneville, Francisco Prada, Greg Tarlé

Author Affiliations +

Proceedings Volume 11447, Ground-based and Airborne Instrumentation for Astronomy VIII; 114478K (2020) https://doi.org/10.1117/12.2561631
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

The recently commissioned Dark Energy Spectroscopic Instrument (DESI) will measure the expansion history of the Universe using the Baryon Acoustic Oscillation technique. The spectra of 35 million galaxies and quasars over 14,000 sq deg will be measured during the life of the experiment. A new prime focus corrector for the KPNO Mayall telescope delivers light to 5,000 fiber optic positioners which in turn feed ten broad-band spectro- graphs. The DESI focal plane subsystem contains the fiber optic positioners and guide and focus cameras, which enable the alignment of fibers with astronomical targets. This paper describes the performance of the installed instrument.

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Parker Fagrelius, Yutong Duan, Kevin Fanning, Klaus Honscheid, Steven Kent, Paul Martini, Claire Poppett, David Rabinowitz, Michael Schubnell, Joseph Silber, David Brooks, Todd Claybaugh, Peter Doel, Enrique Gaztañaga, Michael Levi, Christophe Magneville, Francisco Prada, and Greg Tarlé "Performance of the Dark Energy Spectroscopic Instrument (DESI) focal plane", Proc. SPIE 11447, Ground-based and Airborne Instrumentation for Astronomy VIII, 114478K (13 December 2020); https://doi.org/10.1117/12.2561631

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