Bibcode
Wilson, John C.; Hearty, Fred; Skrutskie, Michael F.; Majewski, Steven; Schiavon, Ricardo; Eisenstein, Daniel; Gunn, Jim; Blank, Basil; Henderson, Chuck; Smee, Stephen; Barkhouser, Robert; Harding, Al; Fitzgerald, Greg; Stolberg, Todd; Arns, Jim; Nelson, Matt; Brunner, Sophia; Burton, Adam; Walker, Eric; Lam, Charles; Maseman, Paul; Barr, Jim; Leger, French; Carey, Larry; MacDonald, Nick; Horne, Todd; Young, Erick; Rieke, George; Rieke, Marcia; O'Brien, Tom; Hope, Steve; Krakula, John; Crane, Jeff; Zhao, Bo; Carr, Mike; Harrison, Craig; Stoll, Robert; Vernieri, Mary A.; Holtzman, Jon; Shetrone, Matt; Allende-Prieto, C.; Johnson, Jennifer; Frinchaboy, Peter; Zasowski, Gail; Bizyaev, Dmitry; Gillespie, Bruce; Weinberg, David
Bibliographical reference
Ground-based and Airborne Instrumentation for Astronomy III. Edited by McLean, Ian S.; Ramsay, Suzanne K.; Takami, Hideki. Proceedings of the SPIE, Volume 7735, pp. 77351C-77351C-14 (2010).
Advertised on:
7
2010
Citations
0
Refereed citations
0
Description
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.