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2.3 Slit

The bi-parting slit consists of two polished and aluminized Tantung-G plates set at an 11 degree angle to allow preslit viewing (figure 1 ). Minimum closure is 12 , and 50 mm is the maximum opening. The slit is usually set by the computer to the desired width.



kessel@noao.edu
Fri June 9 08:00:00 MST 1995