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		| Paper: | 
		A tale of two NSF CCDs | 
	 
	
		| Volume: | 
		8, CCDs in Astronomy | 
	 
	
		| Page: | 
		137 | 
	 
	
		| Authors: | 
		Bohannan, Bruce | 
	 
	
	
		| Abstract: | 
		The present study describes the two-device system constructed at the Sommers-Bausch Observatory for using the TI CCD, as well as sensitization tests and the characteristics of the two devices. Sufficient areas were free of defects for single-order or long-slit spectroscopy, and both devices were adequate for some imaging applications. The quantum efficiencies of NSF 562 and the voltages for NSF 280 and NSF 562 are presented. | 
	 
	
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