Physics – Optics
Scientific paper
Feb 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002pasp..114..187m&link_type=abstract
The Publications of the Astronomical Society of the Pacific, Volume 114, Issue 792, pp. 187-197.
Physics
Optics
1
Instrumentation: Adaptive Optics, Techniques: High Angular Resolution
Scientific paper
We present a technique for improving the image resolution achievable in the visible with an 8 m class telescope. The method is based on the combined use of an adaptive optics (AO) system and a multiaperture fast shutter. A real-time subaperture selection is used to discard those parts of the AO-corrected wave front that are still characterized by significant residual aberrations. Achievable gains in resolution and peak intensity are computed via numerical simulation adopting two different selection approaches. Depending on the selection rate and seeing conditions, different gains, reaching a maximum value of about 4, are obtained with respect to the atmospheric aberrated image. An application to the problem of detecting a faint companion close to a bright star is presented.
Franchini Marco
Furlani Sergio
Morossi Carlo
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