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T.R. Rimmele (National Solar Observatory), R.R. Radick (Air Force Research Laboratory), K. Richards, R.B. Dunn (National Solar Observatory)
The National Solar Observatory is developing solar adaptive optics at the R.B. Dunn Solar Telescope (DST). The project recently achieved a key milestone when the atmospheric control loop was closed at the DST. The system currently compensates about 20 spatial modes with a loop bandwidth of about 30 Hz. A 97-actuator deformable mirror is used for wavefront correction. A correlating Shack-Hartmann wavefront sensor provides real-time estimates of the wavefront errors using arbitrary scenes, such as solar granulation and small pores, as the wavefront sensing target. We will describe the system design and present results from first engineering runs at the DST.
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s follows:
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