Large field-of-view configurations for large-telescope adaptive optics systems: advantages and tradeoffs

Xianyu Zhang; Thomas M. Herbst; Changhui Rao; Peter Bizenberger; Albert R. Conrad; Carmelo Arcidiacono; Wolfgang Gaessler; Roberto Ragazzoni; Thomas Bertram

doi:10.1117/12.977706

15 October 2012 Large field-of-view configurations for large-telescope adaptive optics systems: advantages and tradeoffs

Xianyu Zhang, Thomas M. Herbst, Changhui Rao, Peter Bizenberger, Albert R. Conrad, Carmelo Arcidiacono, Wolfgang Gaessler, Roberto Ragazzoni, Thomas Bertram

Author Affiliations +

Proceedings Volume 8415, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes; 841507 (2012) https://doi.org/10.1117/12.977706
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

Abstract

In order to achieve high sky coverage with natural guide star adaptive optics systems, the reference stars need to be chosen over a large field of view. But the size of the optical beam can become unmanageably large in current and planned future giant telescopes. This can render the optics unaffordable. To solve this issue, we have adopted two approaches - multiple fields of view and star-enlargers - for the LINC-NIRVANA layer-oriented, multiple-conjugated adaptive optics system. In this paper, we compare and contrast the advantages and disadvantages of various optical configurations for wide-field, natural guide star acquisition on current 8-meter and future 25-40 meter extremely large telescopes.

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Xianyu Zhang, Thomas M. Herbst, Changhui Rao, Peter Bizenberger, Albert R. Conrad, Carmelo Arcidiacono, Wolfgang Gaessler, Roberto Ragazzoni, and Thomas Bertram "Large field-of-view configurations for large-telescope adaptive optics systems: advantages and tradeoffs", Proc. SPIE 8415, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 841507 (15 October 2012); https://doi.org/10.1117/12.977706

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KEYWORDS

Adaptive optics

Wavefront sensors

Stars

Mirrors

Charge-coupled devices

Telescopes

Large telescopes

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