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The Lick-Gaertner automatic measuring systemThe Lick-Gaertner automatic equipment has been designed mainly for the measurement of stellar proper motions with reference to galaxies, and consists of two main components: the survey machine and the automatic measuring engine. The survey machine is used for initial inspection and selection of objects for subsequent measurement. Two plates, up to 17 x 17 inches each, are surveyed simultaneously by means of projection on a screen. The approximate positions of objects selected are measured by two optical screws: helical lines cut through an aluminum coating on glass cylinders. These approximate coordinates to a precision of the order of 0.03mm are transmitted to a card punch by encoders connected with the cylinders.
Document ID
19720006781
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Vasilevskis, S.
(Lick Observatory Mount Hamilton, CA, United States)
Popov, W. A.
(Gaertner Scientific Corp.)
Date Acquired
August 6, 2013
Publication Date
November 1, 1971
Publication Information
Publication: Univ. of South Fla. Conf. on Photo. Astrometric Technique
Subject Category
Instrumentation And Photography
Accession Number
72N14430
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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