New telescope encoder

J. Alan Schier; Oscar Rodriguez; Brett Sandberg

doi:10.1117/12.176244

1 June 1994 New telescope encoder

J. Alan Schier, Oscar Rodriguez, Brett Sandberg

Proceedings Volume 2199, Advanced Technology Optical Telescopes V; (1994) https://doi.org/10.1117/12.176244
Event: 1994 Symposium on Astronomical Telescopes and Instrumentation for the 21st Century, 1994, Kailua, Kona, HI, United States

Abstract

We describe a new telescope encoder that overcomes several traditional problems. The system uses a camera, a ruled scale, and a robust image processing algorithm to determine angular position. The ruled scale can be any of a variety of materials. The system is noncontacting, dirt insensitive, and has typical alignment tolerances of 0.25 mm.

Citation Download Citation

J. Alan Schier, Oscar Rodriguez, and Brett Sandberg "New telescope encoder", Proc. SPIE 2199, Advanced Technology Optical Telescopes V, (1 June 1994); https://doi.org/10.1117/12.176244

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