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Proceedings Paper

MARTINI: sensing and control system design
Author(s): Andrew Peter Doel; Colin N. Dunlop; John Victor Major; Richard M. Myers; Ray M. Sharples
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Paper Abstract

The Multiple Aperture Real Time Image Normalization Instrument (MARTINI) is an astronomical adaptive optics system for visible imaging and spectroscopic feedthrough at the 4.2-m William Herschel Telescope on La Palma. It consists of a six-subaperture, tip-tilt-piston, segmented mirror device and uses 4r(0) aperture-matching to provide optimum slope removal in zones large enough for operation in the visible and with reference objects fainter than V = 13 exp m. This limit is achieved by optimizing the use of reference light, by analyzing the information from a photon counting wavefront sensor using a non-flaming (i.e., irregular sampling) infinite impulse response filter for estimation and prediction of the wavefront slopes. The value of this approach is discussed along with its extension to higher-order correction schemes. Experimental evidence supporting the theoretical basis of the MARTINI system is also presented. The astronomical potential of such an approach, and the drawbacks, are outlined.

Paper Details

Date Published: 13 January 1992
PDF: 7 pages
Proc. SPIE 1543, Active and Adaptive Optical Components, (13 January 1992); doi: 10.1117/12.51202
Show Author Affiliations
Andrew Peter Doel, Univ. of Durham (United Kingdom)
Colin N. Dunlop, Univ. of Durham (United Kingdom)
John Victor Major, Univ. of Durham (United Kingdom)
Richard M. Myers, Univ. of Durham (United Kingdom)
Ray M. Sharples, Univ. of Durham (United Kingdom)


Published in SPIE Proceedings Vol. 1543:
Active and Adaptive Optical Components
Mark A. Ealey, Editor(s)

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