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3 The Gold Spectrograph

Originally called the Image-Tube Spectrograph, this instrument has been the workhorse at the 2.1-meter telescope since it was built in the early 1970's. First used by Dr. Roger Lynds for his pioneering work on QSO's, it has been used with Carnegie image tubes in combination with photographic plates, in recent years with the IIDS and now with the Gold CCD Camera. The design is the classic off-axis collimator (4-inch point source beam diameter) feeding a 5x6-inch plane reflectance grating and a catadioptric camera that is an integral part the CCD dewar assembly. With the exceptions of the shutter and CCD, the entire spectrograph is manually operated.
Wed Aug 2 13:05:25 MST 1995