Fast tip-tilt segment alignment for segmented mirrors

Jure Skvarč

doi:10.1117/12.2231881

27 July 2016 Fast tip-tilt segment alignment for segmented mirrors

Jure Skvarč

Proceedings Volume 9906, Ground-based and Airborne Telescopes VI; 990669 (2016) https://doi.org/10.1117/12.2231881
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

A method for fast identification of segments and alignment of the segmented mirrors has been developed and applied for the deformable mirror of the WHT AO system (NAOMI) and for the GTC 36-segment primary mirror. By moving each segment by a known but different amount and in a different direction it is possible to identify many segments simultaneously using a pattern-matching algorithm which finds spots that have moved by a segment-specific vector from one image to another. The method does not need any special optical setup. The applicability of the method for the segmented primary mirrors of future telescopes is discussed.

Citation Download Citation

Jure Skvarč "Fast tip-tilt segment alignment for segmented mirrors", Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 990669 (27 July 2016); https://doi.org/10.1117/12.2231881

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