15 July 2010 The Apache Point Observatory Galactic Evolution Experiment (APOGEE) high-resolution near-infrared multi-object fiber spectrograph
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The Apache Point Observatory Galactic Evolution Experiment (APOGEE) will use a dedicated 300-fiber, narrow-band (1.5-1.7 micron), high resolution (R~30,000), near-infrared spectrograph to survey approximately 100,000 giant stars across the Milky Way. This survey, conducted as part of the Sloan Digital Sky Survey III (SDSS III), will revolutionize our understanding of kinematical and chemical enrichment histories of all Galactic stellar populations. The instrument, currently in fabrication, will be housed in a separate building adjacent to the 2.5 m SDSS telescope and fed light via approximately 45-meter fiber runs from the telescope. The instrument design includes numerous technological challenges and innovations including a gang connector that allows simultaneous connection of all fibers with a single plug to a telescope cartridge that positions the fibers on the sky, numerous places in the fiber train in which focal ratio degradation must be minimized, a large (290 mm x 475 mm elliptically-shaped recorded area) mosaic-VPH, an f/1.4 sixelement refractive camera featuring silicon and fused silica elements with diameters as large as 393 mm, three near-within a custom, LN2-cooled, stainless steel vacuum cryostat with dimensions 1.4 m x 2.3 m x 1.3 m.
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John C. Wilson, John C. Wilson, Fred Hearty, Fred Hearty, Michael F. Skrutskie, Michael F. Skrutskie, Steven Majewski, Steven Majewski, Ricardo Schiavon, Ricardo Schiavon, Daniel Eisenstein, Daniel Eisenstein, Jim Gunn, Jim Gunn, Basil Blank, Basil Blank, Chuck Henderson, Chuck Henderson, Stephen Smee, Stephen Smee, Robert Barkhouser, Robert Barkhouser, Al Harding, Al Harding, Greg Fitzgerald, Greg Fitzgerald, Todd Stolberg, Todd Stolberg, Jim Arns, Jim Arns, Matt Nelson, Matt Nelson, Sophia Brunner, Sophia Brunner, Adam Burton, Adam Burton, Eric Walker, Eric Walker, Charles Lam, Charles Lam, Paul Maseman, Paul Maseman, Jim Barr, Jim Barr, French Leger, French Leger, Larry Carey, Larry Carey, Nick MacDonald, Nick MacDonald, Todd Horne, Todd Horne, Erick Young, Erick Young, George Rieke, George Rieke, Marcia Rieke, Marcia Rieke, Tom O'Brien, Tom O'Brien, Steve Hope, Steve Hope, John Krakula, John Krakula, Jeff Crane, Jeff Crane, Bo Zhao, Bo Zhao, Mike Carr, Mike Carr, Craig Harrison, Craig Harrison, Robert Stoll, Robert Stoll, Mary Ann Vernieri, Mary Ann Vernieri, Jon Holtzman, Jon Holtzman, Matt Shetrone, Matt Shetrone, Carlos Allende-Prieto, Carlos Allende-Prieto, Jennifer Johnson, Jennifer Johnson, Peter Frinchaboy, Peter Frinchaboy, Gail Zasowski, Gail Zasowski, Dmitry Bizyaev, Dmitry Bizyaev, Bruce Gillespie, Bruce Gillespie, David Weinberg, David Weinberg, } "The Apache Point Observatory Galactic Evolution Experiment (APOGEE) high-resolution near-infrared multi-object fiber spectrograph", Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77351C (15 July 2010); doi: 10.1117/12.856708; https://doi.org/10.1117/12.856708


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