Abstract
Automated alignment can significantly reduce the time and labor costs in optical system setup and maintenance, especially for space and remote, ground-based telescopes where manual adjustment remains difficult. We demonstrate an automated alignment technique on a multi-element reflective system using pure focal plane sensing and model-based optimal estimation and control. Using either an iterated extended Kalman filter or a square-root unscented Kalman filter, we are able to consistently bring the linear misalignments from around 1 mm to < 5 μm and the angular misalignments from around 500 arcsec to < 6 arcsec in simulation. Combined with our lab's previous work, we can generalize this auto-aligning technique to more complex optical systems with multiple reflective and refractive elements.
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