The BigBOSS spectrograph

24 September 2012 The BigBOSS spectrograph

Patrick Jelinsky, Chris Bebek, Robert Besuner, Pierre-Henri Carton, Jerry Edelstein, Michael Lampton, Michael E. Levi, Claire Poppett, Eric Prieto, David Schlegel, Michael Sholl

Author Affiliations +

Proceedings Volume 8446, Ground-based and Airborne Instrumentation for Astronomy IV; 844668 (2012) https://doi.org/10.1117/12.925451
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

BigBOSS is a proposed ground-based dark energy experiment to study baryon acoustic oscillations (BAO) and the growth of structure with a 14,000 square degree galaxy and quasi-stellar object redshift survey. It consists of a 5,000- fiber-positioner focal plane feeding the spectrographs. The optical fibers are separated into ten 500 fiber slit heads at the entrance of ten identical spectrographs in a thermally insulated room. Each of the ten spectrographs has a spectral resolution (λ/Δλ) between 1500 and 4000 over a wavelength range from 360 - 980 nm. Each spectrograph uses two dichroic beam splitters to separate the spectrograph into three arms. It uses volume phase holographic (VPH) gratings for high efficiency and compactness. Each arm uses a 4096x4096 15 μm pixel charge coupled device (CCD) for the detector. We describe the requirements and current design of the BigBOSS spectrograph. Design trades (e.g. refractive versus reflective) and manufacturability are also discussed.

Citation Download Citation

Patrick Jelinsky, Chris Bebek, Robert Besuner, Pierre-Henri Carton, Jerry Edelstein, Michael Lampton, Michael E. Levi, Claire Poppett, Eric Prieto, David Schlegel, and Michael Sholl "The BigBOSS spectrograph", Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 844668 (24 September 2012); https://doi.org/10.1117/12.925451

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