Schmidt system


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Schmidt system

n.
An optical system consisting of a concave spherical mirror with a transparent lens, resembling a plate of glass, located at its center of curvature, used in reflecting telescopes to offset spherical aberration and coma.

[After Bernhard Voldemar Schmidt (1879-1935), Estonian-born German optical scientist.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
Last night skipper O'Connell acknowledged there's an "element of the unknown" about what's going to occur at the Stadio Olimpico as Ireland start their title in the Schmidt system and he declared: "I do feel we're ready.