NASA NTRS · 19730021118
Universal obturator shutter
Abstract
The construction and electrical circuit of a rotating photoshutter are described. The photoshutter can operate, using both stationary and expeditional astronomical instruments under one of three conditions: (1) short exposures from 0.01 to 0.06 sec, controlled by a mobile sector; (2) exposures from 1 sec and more, fixed by hand; and (3) exposures fixed by an electronic or electromechanical timer. The working aperture of the shutter is 150 x 150 mm.
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Skorik, K. Y.. 1973-01-01. Universal obturator shutter. https://ntrs.nasa.gov/citations/19730021118
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