Physics
Scientific paper
Jan 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986spie..628..434k&link_type=abstract
IN: Advanced technology optical telescopes III; Proceedings of the Meeting, Tucson, AZ, Mar. 3-6, 1986 (A87-35201 15-89). Bellin
Physics
Coders, Domes (Structural Forms), Fault Tolerance, Optical Measuring Instruments, Position Sensing, Telescopes, Accuracy, Decoding, Error Analysis, Maintainability, Photodiodes, Reliability
Scientific paper
This report presents a design for an inexpensive and highly reliable dome position encoder which has few moving parts and which eliminates the need for a mechanical engagement to the dome. This hybrid incremental/absolute optical encoder is now in use on the dome of the 1-meter Nickel Telescope at Lick Observatory, and will soon be installed on the dome of the Observatory's Shane 3-meter Telescope. This report discusses the costs and important points of the construction, installation, operation, and maintenance of the encoder. It also explores the feasibility of using this encoder on the domes of large telescopes such as the Keck Observatory 10-meter.
Delaney Calvin R.
Kibrick Robert
Osborne Jeffrey
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