The Coudé Cameras

The following table contains a summary of the characteristics of cameras 5 and 6. The resolutions, spectral coverages, and typical exposure times for different camera-grating combinations are summarized in table 10. This information may be used to help determine the proper camera for a particular observing project.

	   Table 7.  Coude Spectrograph Cameras

			     Camera Number
			------------------------
Parameter                    5           6
------------------------------------------------
f-ratio                      3.6       16
f-length(cm)		   108.0      365.3
demagnification -small col.  6.3        1.9
		-large col.  9.4        3.0


       Table 10.  Coude Camera Performance Using CCDs

			     Camera 5            Camera 6
			 -------------------------------------
		Grating    blue      red    I    blue      red
		----------------------------------------------
reciprocal         A       4.7      7.0          1.4       2.1
dispersion         B       9.9     14.8          2.8       4.2
(A/mm)             C       7.8     15.7          2.2       4.4
		   D       3.8      7.6          1.1       2.2
		   ECH	   1.2      1.8          0.32      0.51