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Title:
Analysis of chromatic effects in the shift-and-add method
Authors:
Orlov, V. G.; Voitsekhovich, V. V.
Affiliation:
AA(Instituto de Astronomía, Universidad Nacional Autónoma de México, Mexico)
Publication:
Revista Mexicana de Astronomía y Astrofísica Vol. 44, pp. 325-329 (2008) (http://www.astroscu.unam.mx/~rmaa/) (RMxAA Homepage)
Publication Date:
10/2008
Origin:
RMXAA
Keywords:
instrumentation: adaptive optics, techniques: high angular resolution, techniques: interferometric, techniques: speckle
Bibliographic Code:
2008RMxAA..44..325O

Abstract

Chromatic effects in shift-and-add (SAA) adaptive systems are considered by means of computer simulations. Chromatic effects under investigations arise when measurements and corrections are performed in different wavelengths. A study of chromatic properties of SAA technique is useful for designing of SAA adaptive systems. Also it is important for data reduction of speckle-spectroscopic observations. The comparison of two approaches of low order adaptive corrections (SAA and tip-tilt) is presented. The advantages of SAA adaptive systems are outlined.
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