30 January 2002 History and construction of large mosaic diffraction gratings
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Abstract
Today's large aperture telescopes have created a demand for diffraction gratings that are larger than the capabilities of the largest ruling engines. To overcome this obstacle, a method to produce a stable and passive assembly of two or more gratings is required. Replicated monolithic mosaics are produced by the simultaneous optical replication of two submaster diffraction gratings that are aligned relative to one another using a massive kinematic support structure. Relative surface alignment of the individual grating segments of better than 1 arc second is reported.
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Thomas Blasiak, Semyon Zheleznyak, "History and construction of large mosaic diffraction gratings", Proc. SPIE 4485, Optical Spectroscopic Techniques, Remote Sensing, and Instrumentation for Atmospheric and Space Research IV, (30 January 2002); doi: 10.1117/12.454272; https://doi.org/10.1117/12.454272
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KEYWORDS
Diffraction gratings

Telescopes

Kinematics

Astronomical telescopes

Astronomy

Observatories

Control systems

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