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The Bench Spectrograph is a stable, isolated spectrograph optimized for use with optical fibers. It permits relatively easy changes of configuration between high and low dispersion and between various spectral regions. The bench-mounted nature also allows for future additions and modifications. Figure 2 shows the schematic layout of the Bench Spectrograph.
Figure 2: Overhead schematic view of the Bench Spectrograph.
Adjustable components include the choice of blue or red fiber cables, the choice of several gratings, the choice of two cameras, and a variable collimator-camera angle and grating-detector distance.