Computer Science – Graphics
Scientific paper
Apr 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985esasp.226..153t&link_type=abstract
In ESA Colloq. on Kilometric Opt. Arrays in Space p 153-154 (SEE N86-11096 01-89)
Computer Science
Graphics
1
Computer Systems Design, Image Correlators, Image Processing, Michelson Interferometers, Microcomputers, On-Line Systems, Telescopes, Central Processing Units, Computer Graphics, Data Acquisition, Microprocessors
Scientific paper
A microprocessor based system for reducing images on a large astronomical interferometer was built for use as an autocorrelator. It consists of three standard VME boards (two CPU boards and a graphic visualization controller) and a board built for image acquisition. The CPU 1 is a 128 kbyte, MC 68000 with 8 MHz clock. It does photon centroiding and image cleaning; CPU 2 is a 512 kbyte, MC 68000 with 10 MHz clock. It does image autocorrelation and integration, but can be adapted to user needs. The graphic controller is 256 x 256 pixels in 16 colors. Images are stored in two fast flip-flop RAMs to allow the processor to work on the last image without interference with acquisition of the next one.
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