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Proceedings Paper

Four-quadrant error sensor that yields position and focus utilizing an internal mirrorlette array
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Paper Abstract

The concept and design for a novel four-quadrant position and focus error sensor are presented. Expected performance and theory of operation of the astigmatic focus sensor are presented. Features include wide field of view, broad wavelength coverage, high efficiency, integral field and pupil stops, and alignment and assembly benefits. A new method for sectioning the field is utilized, an internal mirrorlette array (IMA). The advantages of the IMA are given. This error sensor is implemented in the WIYN Tip-Tilt Module, an add-on imaging instrument for the 3.5 m WIYN telescope at Kitt Peak National Observatory.

Paper Details

Date Published: 16 August 2000
PDF: 10 pages
Proc. SPIE 4008, Optical and IR Telescope Instrumentation and Detectors, (16 August 2000); doi: 10.1117/12.395460
Show Author Affiliations
David Vaughnn, National Optical Astronomy Observatories (United States)
Charles F. Claver, National Optical Astronomy Observatories (United States)
Eric Harvey Richardson, Univ. of Victoria (Canada)


Published in SPIE Proceedings Vol. 4008:
Optical and IR Telescope Instrumentation and Detectors
Masanori Iye; Alan F. M. Moorwood, Editor(s)

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