urn:nasa:pds:context:instrument:gemini-south.8m1.gmos-s 1.4 1.25.0.0 Product_Context 2026-07-07 1.4 Removed duplicate Internal_Reference entries from Reference_List. 2025-12-24 1.3 Adding missing "facility" references. Adding missing "telescope" references. 2025-12-24 1.2 Updated schema version. Adding missing "facility" references. Adding missing "telescope" references. 2025-01-02 1.1 Updated schema version. Adding missing "telescope" references. Update instrument type/subtype to use valid CTLI LDD. 2022-02-24 1.0 Initial export from OLAF urn:nasa:pds:context:telescope:gemini-south.8m1 instrument_to_telescope urn:nasa:pds:context:facility:observatory.gemini-south instrument_to_facility Gemini Multi-Object Spectrograph - South (GMOS-S) Spectrometer Camera GMOS-S is one of two identical instruments mounted on the Gemini telescopes. GMOS-S is mounted on the Gemini South telescope. The GMOS are long-slit and multi-slit imaging spectrographs with a 5.5 square arcminute field of view and a wavelength range of 0.36-0.94 micrometers. An Integral Field Unit is also availabe to obtain spectra from a 35 square arcsecond field of view with a sampling of 0.2 arcseconds. The Nod-and-Shuffle mode, which enables superior sky subtraction, is available with both GMOS-N and GMOS-S in most spectroscopic modes.