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The Coudé Echelle Spectrograph (UCLES)

This spectrograph was commissioned in June 1988, and allows the spectra of objects as faint as V = 16-17 to be observed with a resolving power () of 60,000 to 115,000 depending on the detector used. The spectrograph uses the f/36 coudé focus and is operated entirely under computer control. Either the IPCS or a CCD can be used as the detector, though in practise the TEK CCD now offers superior performance in all but a few very specialised applications.

Figure 5.2 shows the layout of UCLES, and a full description of the system is given in AAO UM 25.2 : The UCL Echelle Spectrographs. (See the Documentation area of this Manual  or the Documentation area of the AAO WWW pages)


Figure 5.2: UCLES optical path



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This Page Last updated: Feb 21, 1996, by Chris Tinney.
Note that the discussion above is out of date in that it assumes the IPCS as a detector.