18 July 2014 Development of aberration measurement program using curvature sensing technique
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Abstract
The aberration measurement program has been developed for improving the optical quality of ground-based telescopes. This program is based on the Curvature Sensing Technique (CST) and aberrations are estimated from two defocused stellar images. We used iterative algorithm that simulates closed-loop wave-front compensation in optics. It has been applied to the telescope of Bohyunsan Optical Astronomy Observatory (BOAO) in Korea. The most frequently encountered aberration by misalignment was coma. As a result, the image quality of telescope was improved after adjustment the alignment of secondary mirror.
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Hyun-Il Sung, Hyun-Il Sung, Tae-Ho Ha, Tae-Ho Ha, Yoon-Ho Park, Yoon-Ho Park, Sang-Min Lee, Sang-Min Lee, Youngbeom Jeon, Youngbeom Jeon, } "Development of aberration measurement program using curvature sensing technique", Proc. SPIE 9152, Software and Cyberinfrastructure for Astronomy III, 91521T (18 July 2014); doi: 10.1117/12.2056673; https://doi.org/10.1117/12.2056673
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