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

David Vaughnn; Charles F. Claver; Eric Harvey Richardson

doi:10.1117/12.395460

16 August 2000 Four-quadrant error sensor that yields position and focus utilizing an internal mirrorlette array

David Vaughnn, Charles F. Claver, Eric Harvey Richardson

Proceedings Volume 4008, Optical and IR Telescope Instrumentation and Detectors; (2000) https://doi.org/10.1117/12.395460
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

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.

Citation Download Citation

David Vaughnn, Charles F. Claver, and Eric Harvey Richardson "Four-quadrant error sensor that yields position and focus utilizing an internal mirrorlette array", Proc. SPIE 4008, Optical and IR Telescope Instrumentation and Detectors, (16 August 2000); https://doi.org/10.1117/12.395460

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