A simplified adaptive optics system

摘要: Affordable adaptive optics on small telescopes allow to introduce the technology a large community and provide opportunities train new specialists in field. We have developed low order, cost system for 1.6m telescope of Mont Megantic Observatory. The corrects tip-tilt, focus, astigmatisms one trefoil term. It explores number approaches. sensor receives single out-of-focus image reference star. central obstruction can free focus detection from effect seeing allows very defocus. deformable mirror is profiled so as preserve parabolic shape under pressure actuators located at its edge. A separate piezoelectric platform drives tilt mirror.