Adaptive Imaging and Stabilization System for a Large-Aperture Solar Telescope

A multistage adaptive imaging and stabilization system for the Large Solar Vacuum Telescope was created at the Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, with the technical support of researchers of the Institute of Solar-Terrestrial Physics, Siberian Branch, Russian Academy of Sciences. The system was tested and proved to be effective. It provides image stabilization during the first stage, wavefront shape correction with a flexible mirror controlled with a special wavefront sensor during the second stage, and postdetector frame processing during the third stage. For postdetector correction of digital images, special software was developed based on high-speed parallel algorithms. Ways for further development of the system are suggested, including development of high-speed correlation tracking algorithms and addition of the second set of wavefront sensors and a flexible mirror mounted in a conjugate plane at the altitude of a layer with strong local turbulence.