BigBOSS Optical System

Details BigBOSS Optical System BigBOSS Optical System

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21933508s&link_type=abstract

American Astronomical Society, AAS Meeting #219, #335.08

Astronomy and Astrophysics

Astronomy

Scientific paper

BigBOSS is a proposed ground-based dark energy experiment designed to study baryon acoustic oscillations (BAO) and the growth of large scale structure through a 14,000 square degree survey of emission line galaxies, luminous red galaxies and quasi-stellar objects. The project involves design, construction and installation of a new widefield optical corrector for the Mayall 4m telescope. The corrector magnifies the f/2.81 prime focus to f/4.5 over a circular field of view of three degrees. A prism-based atmospheric dispersion compensator is included in the design, to allow broadband spectroscopy over a range of angles up to 60 degrees from zenith. A robotically positioned 5000 fiber system directs galaxy light to a remote array of 10 spectrometers, each with three channels. Optical design, fabrication, tolerances and alignment of the widefield corrector and spectrometer are discussed.

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