The 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.
The automated photographic measuring facility at Cambridge
1984-07-01
Conference paper
No indication
English
The Cambridge photographic atlas of the planets
NTRS | 1982
|The Long Duration Exposure Facility (LDEF) Photographic Survey Special Publication
British Library Conference Proceedings | 1995
|