Real-time image sharpening without adaptive optics by on-chip tracking

Details Real-time image sharpening without adaptive optics by on-chip tracking Real-time image sharpening without adaptive optics by on-chip tracking

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2198..763f&link_type=abstract

Proc. SPIE Vol. 2198, p. 763-773, Instrumentation in Astronomy VIII, David L. Crawford; Eric R. Craine; Eds.

Astronomy and Astrophysics

Astronomy

1

Scientific paper

A new non-destructive readout scheme for IR array detectors, which allows image sharpening by on chip tracking has been tested with the ESO IR array camera IRAC2. This camera is equipped with a large format NICMOS3 256*256 MCT array detector. The effect of the readout algorithm is equivalent to a first order wavefront correction of images degraded by atmospheric seeing. Correction is performed in real time for long on chip detector integrations. Results obtained at a 2.2 m telescope on the pre main sequence binary star S CrA, the Circinus galaxy and the cluster NGC3603 will be presented. Possible applications of this method at large 8 m telescopes will be discussed.

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