10 February 1981 Adjustable Mosaic Grating Mounts
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Abstract
Three 30-cm mosaic gratings are being built for the Coude spectrograph of the Canada-France-Hawaii 3.6 meter telescope. The largest mosaic is 30 by 60 cm and is composed of four 15 by 30 cm echelle gratings. The individual gratings have coarse, fine, and super-fine adjustments. The alignment can be checked, and corrected if necessary, by one person in a few minutes. An earlier version of these mosaics has been in operation at the Dominion Astrophysical Observatory for many years and has proven to be practical and popular with the astronomers.
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G. A. Brealey, G. A. Brealey, J. M. Fletcher, J. M. Fletcher, W. A. Grundmann, W. A. Grundmann, E. H. Richardson, E. H. Richardson, } "Adjustable Mosaic Grating Mounts", Proc. SPIE 0240, Periodic Structures, Gratings, Moire Patterns, and Diffraction Phenomena I, (10 February 1981); doi: 10.1117/12.965659; https://doi.org/10.1117/12.965659
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