Physics – Optics
Scientific paper
Jan 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992spie.1543..472d&link_type=abstract
In: Active and adaptive optical components; Proceedings of the Meeting, San Diego, CA, July 24-26, 1991 (A93-39559 15-74), p. 47
Physics
Optics
1
Adaptive Optics, Control Systems Design, Image Enhancement, Imaging Techniques, Mirrors, Geometrical Optics, Optimization, Performance Tests, Power Spectra, Wave Fronts
Scientific paper
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.
Doel Andrew P.
Dunlop Colin N.
Major John V.
Myers Richard M.
Sharples Ray M.
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