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The Commissioning Instrument for the Dark Energy Spectroscopic Instrument
Ashley J. Ross, Paul Martini, Rebecca Coles +8
We describe the design of the Commissioning Instrument for the Dark Energy Spectroscopic Instrument (DESI). DESI will obtain spectra over a 3 degree field of view using the 4-meter…
DESI Commissioning Instrument Metrology
Rebecca A. Coles, David Brooks, Mark Derwent +4
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…
Design of the KOSMOS oil-coupled spectrograph camera lenses
Thomas P. O'Brien, Mark Derwent, Paul Martini +1
We present the design details of oil-coupled lens groups used in the KOSMOS spectrograph camera. The oil-coupled groups use silicone rubber O-rings in a unique way to accurately ce…
KOSMOS and COSMOS: New facility instruments for the NOAO 4-meter telescopes
Paul Martini, J. Elias, S. Points +19
We describe the design, construction and measured performance of the Kitt Peak Ohio State Multi-Object Spectrograph (KOSMOS) for the 4-m Mayall telescope and the Cerro Tololo Ohio…