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First Results of Digital Topography Applied to Macromolecular CrystalsAn inexpensive digital CCD camera was used to record X-ray topographs directly from large imperfect crystals of cubic insulin. The topographs recorded were not as detailed as those which can be measured with film or emulsion plates but do show great promise. Six reflections were recorded using a set of finely spaced stills encompassing the rocking curve of each reflection. A complete topographic reflection profile could be digitally imaged in minutes. Interesting and complex internal structure was observed by this technique.The CCD chip used in the camera has anti-blooming circuitry and produced good data quality even when pixels became overloaded.
Document ID
20040082389
Acquisition Source
Marshall Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Lovelace, J.
Soares, A. S.
Bellamy, H.
Sweet, R. M.
Snell, E. H.
Borgstahl, G.
Date Acquired
August 21, 2013
Publication Date
January 1, 2004
Subject Category
Optics
Distribution Limits
Public
Copyright
Other

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