Dual-Beam Spectrograph (DBS)

The Dual-Beam Spectrograph was a general purpose optical slit spectrograph that was mounted at the Nasmyth A focus of the ANU 2.3m telescope. It was replaced in 2009 by the integral-field Wide-Field Spectrograph (WiFeS), which benefits from the design heritage of the DBS. Two similar spectrographs, with red- and blue-optimised detectors provided wavelength coverage of 320 - 900nm, split by a dichroic at around 600nm.

See the following paper for more information:

A.W. Rodgers, P. Conroy, & G. Bloxham (1988) A Dual-Beam Nasmyth Spectrograph, PASP, 100, 626