urn:nasa:pds:context:instrument:orm.gtc10m4.osiris 1.3 1.25.0.0 Product_Context 2026-07-07 1.3 Removed duplicate Internal_Reference entries from Reference_List. 2025-12-24 1.2 Updated schema version. 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. 2021-07-23 1.0 Initial export from OLAF urn:nasa:pds:context:telescope:orm.gtc10m4 instrument_to_telescope GTC OSIRIS Optical Imager and Spectrograph Camera Spectrometer The Optical System for Imaging and low-Intermediate Resolution Integrated Spectroscopy (OSIRIS) of the Gran Telescopio Canarias (GTC) is an imager and spectrograph for optical wavelengths. Wavelength range coverage is 0.365 - 1.05 microns; total field of view is 7.8 x 8.5 arcminutes for direct imaging and 7.5x6.0 arcminutes for multi-object spectroscopy. OSIRIS has a number of operating modes. Imaging modes include: broad, medium, and narrow band imaging with various filters; fast photometry; and frame transfer photometry. Spectroscopic modes include long-slit spectroscopy and multi-object spectroscopy.