urn:nasa:pds:context:instrument:eso-la_silla.ntt.efosc2 1.4 1.25.0.0 Product_Context urn:nasa:pds:context:instrument:eso.ntt.efosc2 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. 2021-12-07 1.0 per RMS, deprecated eso in favor of eso-la_silla urn:nasa:pds:context:telescope:eso-la_silla.ntt instrument_to_telescope urn:nasa:pds:context:facility:observatory.eso-la_silla instrument_to_facility ESO Faint Object Spectrograph and Camera 2 Imager Spectrometer EFOSC2 is a focal reducer multi-mode instrument using multi-layer coated all-transmission optics. It is permanently mounted at the Nasmyth B focus of the 3.58m New Technology Telescope. The wavelength range of operation is between 305nm and 1100nm. The field of view is 4.1'x4.1'. It has been in operation since 1989. The detector (CCD#40) is a Loral/Lesser, thinned, AR coated, UV flooded, MPP chip controlled by ESO-FIERA. It's size is 2048 x 2048 pixel, the pixel size being 15mux15mu, or 0.12"x0.12" on the sky. The 2x2 binned pixels of the default CCD readout modes will be projected to 0".24 on the sky.