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Universal obturator shutterThe 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.
Document ID
19730021118
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Skorik, K. Y. (Translation Consultants Ltd. Arlington, VA, United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1973
Publication Information
Publication: Astrometry and Astrophys., no. 9: Res. of the Sun and Stars (NASA-TT-F-760)
Subject Category
Instrumentation And Photography
Accession Number
73N29850
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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