urn:nasa:pds:context:instrument:maunakea.2m24.uht2kccd 1.3 1.25.0.0 Product_Context urn:nasa:pds:context:instrument:mauna_kea.2m24.uht2kccd 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. 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 UH Tektronix 2K CCD Imager The UH Tektronix 2K CCD instrument is a CCD camera built around a Tektronix 2048x2048 thinned and backside-illuminated CCD chip, with a 7.5 x 7.5 arcminute field of view. The read noise is 6.0 electrons and the gain is 1.74 electrons/ADU. The scale is 0.219 arcseconds/pix. The detector can be operated in binned mode, such as 2x2 pixels. The CCD is known to have a peak quantum efficiency near 95% in the R band, and has shown itself to be readily calibrated, and free from gross cosmetic defects. The set of BVRI filters for this CCD are the Kron-Cousins photometric system. The filters have the following central wavelengths and widths: Center FWHM Width/delta Wavelength lambda Filter (Angstrom) (Angstrom) ------ ---------- ------------ B 3480 1077 V 5450 836 R 6460 1245 I 8260 1845