Vol. 18, issue 12, article # 8

Antoshkin L.V., Botygina N.N., Emaleev O.N., Kovadlo P.G., Konyaev P.A., Lukin V.P., Lavrinov V.V. Adaptive system of correction for the image jitter using a modified correlation sensor. // Atmospheric and oceanic optics. 2005. V. 18. No. 12. P. 969-974.
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Abstract:

The results of testing the adaptive optics system with a correlation sensor at the Big Solar Vacuum Telescope at the Baikal Astrophysical Observatory are presented. Based on fast 12-bit DALSTAR DS-12-16K5H camera and an active mirror with a piezoelectric drive a system to correct for image jitter has been built, that shows good performance in the image patterns with 10 to 15% contrast. In tracking objects with a very noisy granulation image with 1 to 2% contrast, a modified correlation-tracking algorithm is proposed, which demonstrates a capability of using the correlation method in the case of low contrast objects.

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