Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pasp..103..587l&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 103, June 1991, p. 587-596.
Astronomy and Astrophysics
Astronomy
6
Astronomical Observatories, Computer Techniques, Interfaces, Microprocessors, Systems Integration, Charge Coupled Devices, Controllers, Polarimeters
Scientific paper
Three astronomical instruments have been built that interface to instrument control computers using the VMEbus, a modern 32-bit computer system bus. These consist of a fixed-format TI 800 x 800 CCD camera, a millimeter polarimeter, and a fully programmable multiple-readout CCD camera controller. Custom-built VMEbus interfaces were developed for each instrument and are discussed to illustrate a range of interfacing techniques. Block diagrams are discussed in detail for each, with particular attention paid to the special requirements needed to interface to the VMEbus. A fourth interface currently under development illustrates the added versatility attainable with a fully programmable microprocessor. The range of complexity and flexibility of the four interface designs is considerable and illustrates the diversity that is possible with VMEbus computers.
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