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Apache Point Observatory
Summary
The Apache Point Observatory (APO; obs. code: 705) is an astronomical observatory located in the Sacramento Mountains in Sunspot, New Mexico, United States, approximately south of Cloudcroft. The observatory is operated by New Mexico State University (NMSU) and owned by the Astrophysical Research Consortium (ARC). Access to the telescopes and buildings is private and restricted.
The ARC was formed in 1984 with the goal of building the 3.5 m telescope. It originally consisted of five institutions: New Mexico State University, University of Washington, University of Chicago, Princeton University, and Washington State University, some of which have since withdrawn.
Several additional organizations have joined over time: Johns Hopkins University, University of Colorado, University of Virginia, Georgia State University, University of Oklahoma, University of Wyoming, and Brigham Young University. Funding for the 3.5 m and 0.5 m telescopes comes from the consortium members, but funds for the 2.5 m telescope come from a much wider array of sources. The 1.0 m telescope is supported exclusively by NMSU.
The ARC telescope is a Ritchey-Chretien reflector on an alt-azimuth mount with instruments attached at several focal points. Construction of the building began in 1985, but full operations of the telescope were delayed until November 1994 due to problems with fabricating the primary mirror. From 1991 until early 1993, the telescope was fitted with a 1.8 m mirror, now located at Rothney Astrophysical Observatory under a cost-sharing agreement.
There are a variety of optical and near-infrared instruments available for the 3.5 m telescope, including:
The ARC echelle spectrometer (ARCES) uses a 2048 × 2048 pixel CCD and has a resolution of .
The Double Imaging Spectrometer (DIS) is a low-resolution optical spectrometer.
KOSMOS, on long-term loan from NOIRLab, is a low-resolution optical spectrometer.
The Near Infrared Camera/Fabry–Pérot Spectrometer (NICFPS) was developed at the University of Colorado.
Official source
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