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