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Issue A&A
Volume 372, Number 2, June III 2001
Page(s) 710 - 718
Section Instruments, observational techniques and data processing
DOI http://dx.doi.org/10.1051/0004-6361:20010514



A&A 372, 710-718 (2001)
DOI: 10.1051/0004-6361:20010514

Closed loop performance of a layer-oriented multi-conjugate adaptive optics system

E. Diolaiti1, 2, R. Ragazzoni3 and M. Tordi3

1  Department of Astronomy, University of Padova, vicolo dell'Osservatorio, 2, 35122 Padova, Italy
2  Department of Astronomy, University of Bologna, via Ranzani, 1, 40127 Bologna, Italy
3  Astronomical Observatory of Padova, vicolo dell'Osservatorio, 5, 35122 Padova, Italy

(Received 29 December 2000/ Accepted 12 March 2001)

Abstract
The dynamic properties of a layer-oriented multi-conjugate adaptive optics system are examined. It is shown that such a system is stable and closes the loop. A simplified analysis of the achievable correction is presented, in order to define the conditions in which the layer-oriented approach is equivalent to other linear reconstruction schemes. It is found that this approach is equivalent to an optimum one, under certain assumptions, but still retaining the potential advantages of such a novel scheme.


Key words: instrumentation: adaptive optics -- telescopes

Offprint request: E. Diolaiti, diolaiti@pd.astro.it




© ESO 2001

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