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An automated drum scanner for rapid collection of X‐ray crystallographic data
Author(s) -
Einstein J. R.,
McClelland B. W.
Publication year - 1974
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889874010508
Subject(s) - microdensitometer , scanner , minicomputer , drum , magnetic tape , computer science , flexibility (engineering) , optics , computer graphics (images) , computer data storage , line (geometry) , materials science , computer hardware , physics , digital recording , engineering , mechanical engineering , statistics , geometry , mathematics , operating system
A drum‐scanning microdensitometer has been automated with a minicomputer equipped with a magnetic disk memory. Part of the disk is used for temporary data storage, in a manner allowing rapid retrieval. X‐ray diffraction photographs from macromolecular crystals can be measured at rates up to about 25 reflections per second, with the flexibility of an `on‐line' system. The method can also be used when the computer is time‐shared, but with lowered film‐processing rates dependent on the number of `simultaneous' (time‐sharing) users.