CorMASS (Cornell Massachusetts Slit Spectrograph) is a low-resolution (R~300) prism cross-dispersed NIR Spectrograph. It will be available on the Apache Point Observatory 3.5-m telescope starting in October 2005. Most recently it was used on the Magellan telescope in 2005A. CorMASS's 2-dimensional spectral format provides simultaneous coverage of the IJHK bands, from ~0.75 microns to 2.5 microns. A remotely operated flip mirror allows the use of a slit viewing mode for object placement in the slit.
On August 22, 1999, CorMASS saw first light on the 60-inch Telescope at Palomar Observatory in Califonia. Since that time, CorMASS has been used at various other telescopes including the 1.8-m Vatican Advanced Technology Telescope (VATT) on Mt. Graham in Arizona, the 3.5-m telescope at Apache Point Observatory (APO) in New Mexico and the Clay 6.5-m Magellan Telescope at Las Campanas Observatory in Chile.
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