Computer Science – Performance
Scientific paper
Mar 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.4841.1134f&link_type=abstract
Instrument Design and Performance for Optical/Infrared Ground-based Telescopes. Edited by Iye, Masanori; Moorwood, Alan F. M.
Computer Science
Performance
1
Scientific paper
Binospec is a binocular optical spectrograph under development for the converted MMT. Binospec addresses two adjacent 8' by 15' fields of view, yielding an effective slit length of 30'. Despite its very wide field of view, Binospec's optics are compact due to the favorable image scale at the converted MMT's f/5 Cassegrain focus. However, Binospec's all-refractive collimator and camera have presented several challenges, including the need for careful athermalization and high performance optics mounts. In the course of Binospec's development H.W.E. and D.G.F. developed a new athermalization technique to maintain image scale, image quality, and focus over a wide temperature range using thin lenses formed in the coupling fluid between lens multiplets. Tight specifications for image quality and gravity-induced image motion and defocus lead to tight specifications for displacements of Binospec's optical elements. We describe how Binospec's elastomeric lens mounts have been tuned to attain this level of performance.
Brown Warren L.
Epps Harland W.
Fabricant Daniel G.
Fata Robert G.
Mueller Mark
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