학술논문
Overview of the Dark Energy Spectroscopic Instrument
Document Type
Working Paper
Author
Martini, Paul; Bailey, Stephen; Besuner, Robert W.; Brooks, David; Doel, Peter; Edelstein, Jerry; Eisenstein, Daniel; Flaugher, Brenna; Gutierrez, Gaston; Harris, Stewart E.; Honscheid, Klaus; Jelinsky, Patrick; Joyce, Richard; Kent, Stephen; Levi, Michael; Prada, Francisco; Poppett, Claire; Rabinowitz, David; Rockosi, Constance; Sas, Laia Cardiel; Schlegel, David J.; Schubnell, Michael; Sharples, Ray; Silber, Joseph H.; Sprayberry, David; Wechsler, Risa
Source
Proc. SPIE Vol. 10702, Ground-based and Airborne Instrumentation for Astronomy VII (2018)
Subject
Language
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 square degrees 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 present an overview of the instrumentation, the main technical requirements and challenges, and the current status of the project.
Comment: 11 pages, 4 figures
Comment: 11 pages, 4 figures