The Sloan 2.5m Telescope (or Sloan Foundation 2.5m Telescope)
is a wide-angled Optical Reflector Telescope
developed for the Sloan Digital Sky Survey,
at Apache Point Observatory (APO) in New Mexico.
Its imaging Survey camera incorporated
30 2048x2048 pixel CCDs, with
various filters. It scanned the sky by pointing
at a location and scanning along the great circle,
with five banks of CCDs, each with a different filter
imaging the same area in turn.
With completion of the initial survey,
further surveys such as APOGEE, Baryon Oscillation Spectroscopic Survey, and MARVELS
have used Spectrographs.
(telescope,reflector,visible light,ground,New Mexico)
Sloan Digital Sky Survey (SDSS)