Analysis of chromatic effects in the shift-and-add method

V. G. Orlov, V. V. Voitsekhovich


Chromatic effects in shift-and-add (SAA) adaptive systems are considered by means of computer simulations. Chromatic eects under investigations arise when measurements and corrections are performed in dierent 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.


instrumentation: adaptive optics; techniques: high angular resolution; techniques: interferometric ; techniques: speckle

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