Letter to the Editor
Modal tomography for adaptive optics
Roberto Ragazzoni 1,
Enrico Marchetti 2 and
François Rigaut 3
Received 26 October 1998 / Accepted 17 January 1999
Multiple Laser Guide Stars can be used to retrieve the three-dimensional distribution of the perturbing layers on the coming wavefront in Adaptive Optics system and to derive corrections for conical anisoplanatism. We outline the basic analytical details of a modal approach to this problem. The advantages of this approach with respect to the traditional zonal one are pointed out along with a preliminary discussion of the way the involved matrices are to be treated in order to minimize noise propagation problems.
Key words: instrumentation: adaptive optics atmospheric effects telescopes
This article contains no SIMBAD objects.
© European Southern Observatory (ESO) 1999
Online publication: February 23, 1999