Schmidt optics

Schmidt optics

[′shmit ‚äp·tiks]
(optics)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Married to large Schmidt optics with a 3.6-meter focal length, the array sweeps over Earth's infrared-dark disk every 10 seconds with enough sensitivity and spatial detail to pick up the hot exhaust of even modest ballistic missiles.