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The automated photographic measuring facility at CambridgeThe design and performance of the automated photographic measuring facility at Cambridge is described. It consists of a precision laser scanning microdensitometer connected to a series of computers that process the data on-line. Plates up to 350 mm square can be measured. The microdensitometer samples the plate to 12 bit accuracy at a speed of 230,000 samples/second. The positional accuracy is better than a micron. Other features include platen rotation and automatic focus.
Document ID
19840019974
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Kibblewhite, E. J.
(Institute of Astronomy Cambridge, United Kingdom)
Bridgeland, M. T.
(Institute of Astronomy Cambridge, United Kingdom)
Bunclark, P. S.
(Institute of Astronomy Cambridge, United Kingdom)
Irwin, M.
(Institute of Astronomy Cambridge, United Kingdom)
Date Acquired
August 12, 2013
Publication Date
July 1, 1984
Publication Information
Publication: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.
Subject Category
Instrumentation And Photography
Accession Number
84N28043
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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