CSHELL is a 1 - 5.5 μm high resolution single-order echelle spectrograph which uses a 256 x 256 pixel InSb detector array. Each pixel is 0.2" on the sky and the spectroscopic dispersion is 100,000 per pixel. Slits from 0.5" to 4.0" provide spectral resolutions of up to 30,000. CSHELL also has an IR imaging mode for source acquisition which covers a 30" x 30" field. An internal CCD with a 1' FOV allows for guiding (guider images can be saved). As of 2009, a new user interface was implemented and DV replaces VF as the data viewer.
LAST UPDATE: February 4, 2010