urn:nasa:pds:context:instrument:maunakea.2m24.snifs 1.3 1.25.0.0 Product_Context urn:nasa:pds:context:instrument:mauna_kea.2m24.snifs 2026-07-07 1.3 Removed duplicate Internal_Reference entries from Reference_List. 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. 2021-12-07 1.0 per RMS, deprecated mauna_kea in favor of maunakea urn:nasa:pds:context:telescope:maunakea.2m24 instrument_to_telescope urn:nasa:pds:context:facility:observatory.maunakea instrument_to_facility Supernova Integral Field Spectrograph (SNIFS) Imager Spectrometer The Supernova Integral Field Spectrograph (SNIFS) is a visible wavelength spectrometer that is permanently installed at the University of Hawaii 2.2m telescope. See Lantz et al. (2004) [LANTZETAL2004] for more details on this instrument.