Curvature wavefront sensing performance simulations for active correction of the Javalambre wide-field telescopes
In order to maintain image quality during Javalambre wide field
telescope operations, deformations and rigid body motions must be
actively controlled to minimize optical disturbances. For JST/T250 the
aberrations of the telescope will be measured with four curvature
sensors at the focal plane. To correct the measured distortions, the
secondary mirror position (with a hexapod support) and the camera
position can be modified in a control closed loop. Multiple software
tools have been developed to accomplish this goal, constituting the
"Observatorio Astrofísico de Javalambre" (OAJ) Active Optics
Pipeline. We present a comprehensive analysis of the wave-front sensing
system, including the availability of reference stars, pupil
registration, wavefront estimators and the iteration matrix evaluation
techniques. Some preliminary simulations have been made using a
telescope model with a Optical Ray Tracing Software.