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Central wavelength and order number

Having decided which central wavelengths are to be observed, it is then necessary to configure the spectrograph by moving the following mechanisms:

The instrument control software contains a model of the spectrograph, which takes as input the central wavelength and order number required by the observer, and configures the spectrograph as described above. It is possible for the observer not to specify the order number, in which case the software will determine the interference order for which the wavelength selected is closest to blaze.

Mon Mar 14 16:50:31 GMT 1994