ISSN:
1600-5724
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Chemistry and Pharmacology
,
Geosciences
,
Physics
Notes:
The positional, electronic, and density accuracy of the Syntex AD-1 flatbed autodensitometer is discussed. The standard deviation of optical density measurements due to electronic noise is ± 0.001 optical density units at an optical density of 0, rising to ± 0.04 at an optical density of 2. No deviation from linearity in optical density measurements could be measured. During scanning, the standard deviation in position is less than 1.5 μm. Film grain noise for various films is compared and the effect of signal averaging on this noise is studied. This scanner is compared with other scanners available for accuracy of data collection from precession films.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0567739477001247
Permalink