A Tip-Tilt Mirror Control System for Partial Image Correction at UC Mount John Observatory (2021)
Astronomical images captured by ground-based telescopes, including at University of Canterbury Mount John Observatory, are distorted due to atmospheric turbulence. The major constituents of atmospheric distortion are tip-tilt aberrations. The solution to achieve higher resolution is to develop and install a tip-tilt mirror control system on ground-based telescopes. A realtime tip-tilt mirror control system measures and corrects for tip-tilt aberrations in optical wavefronts. It effectively minimises the perturbation of the star image when observing with the aid of a telescope. To the best of our knowledge, this is the first tip-tilt mirror control system to be applied at a New Zealand astronomical observatory. This would extend the possibilities of correcting higher-order aberrations for 0.5 to 1.0 metre class, ground-based telescopes.
CitationLiu J, Muruganandan V, Clare R, Ramırez Trujillo M, Weddell S (2021). A Tip-Tilt Mirror Control System for Partial Image Correction at UC Mount John Observatory. Wellington, New Zealand: Image and Vision Conference New Zealand (IVCNZ). 25/11/2020-27/11/2020. IEEE Xplore.
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Keywordsimage correction; tilt sensing; wave-front sensing; adaptive optics
ANZSRC Fields of Research02 - Physical Sciences::0201 - Astronomical and Space Sciences::020102 - Astronomical and Space Instrumentation
08 - Information and Computing Sciences::0801 - Artificial Intelligence and Image Processing::080106 - Image Processing
09 - Engineering::0906 - Electrical and Electronic Engineering::090602 - Control Systems, Robotics and Automation