urn:nasa:pds:context:facility:observatory.apache_point 1.3 1.22.0.0 Product_Context Apache Point Observatory 2026-07-07 1.3 Removed duplicate Internal_Reference entries from Reference_List. 2025-01-07 1.2 Updated schema version. Adding missing "investigation" references. Adding missing "instrument" references. Adding missing "telescope" references. 2020-12-20 1.1 Added lid_refernce to u:n:p:c:t:apache_point.arc3m5 and u:n:p:c:t:apache_point.sdss2m5 2016-04-04 1.0 Initial context product urn:nasa:pds:context:telescope:apache_point.sdss2m5 facility_to_telescope urn:nasa:pds:context:telescope:apache_point.arc3m5 facility_to_telescope urn:nasa:pds:context:instrument:apache_point.sdss2m5.sdss_photometric facility_to_instrument urn:nasa:pds:context:instrument:apache_point.arc3m5.agile facility_to_instrument urn:nasa:pds:context:investigation:mission.lunar_crater_observation_and_sensing_satellite facility_to_investigation Apache Point Observatory (APO) Observatory

P.O. Box 59 2001 Apache Point Road Sunspot, New Mexico

USA The Apache Point Observatory (APO) is located in Sunspot, New Mexico, and is an astronomical observatory that is operated by the New Mexico State University (NMSU) and owned by Astrophysical Research Consortium (ARC). The 3.5 meter telescope, which is a Ritchey-Chretien reflector on an alt-azimuth mount, has the capability to attach a variety of optical and near-infrared instruments at various focal points. Instruments include the ARC echelle spectrometer (ARCES); low-resolution double imaging spectrometer (DIS); low-resolution optical spectrometer (KOSMOS), a long-term loan from NOIRLab; near infrared camera/Fabry-Perot spectrometer (NICFPS); the optical ARC Telescope Imaging Camera (ARCTIC); near infrared spectrograph TripleSpec (Tspec); and high-speed imager, Agile. Remote observations can be conducted via the online Telescope User Interface (TUI). Other telescopes at the site include the Sloan Digitial Sky Survey (SDSS) 2.5 meter telescope, the NMSU 1.0 meter telescope, and the 0.5 meter ARC Small Aperture Telescope (ARCSAT). For more information, see https://www.apo.nmsu.edu/