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UCENWAVE79

Configures spectrograph for a specified central wavelength and order number, assuming the 79.0 l/mm grating is being used.

Format: UCENWAVE79 <parameter1> [parameter2]

Parameter1: Central wavelength

Units1: Angstrom

Parameter2: Order number

Units2: None

Examples : UCENWAVE79 5000 0

Comments: The correct echelle will be moved into the beam if it is not already there. If the order number is left out, or is equal to 0, then the blaze peak will be chosen. This command alters the two echelle angles and prism translation in order to select the central wavelength, changes the slit angle to get it vertical on the detector, and selects the UV or wideband collimator.