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Proceedings Paper

Image quality analysis of a fluid atmospheric dispersion corrector
Author(s): Jessica Zheng; Jon Lawrence; Will Saunder; Sam Richards
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Paper Abstract

The image quality of a fluid atmospheric dispersion corrector (FADC) is analysed and presented. The FADC is located at Cassegrain focus to correct the atmospheric dispersion passively at Australian astronomical telescope. It is shown that an FADC with diameter 10mm can correct the atmospheric dispersion over a field diameter of 20” in the spectral range between 0.4μm to 1μm, and to zenith distance of 52º. The FADC image quality is well controlled within 0.27” for the telescope operation range. The residual atmospheric dispersion is 0.1” for on axis field and 0.20” at the extreme field (10”) at zenith distance of 52º. The FADC-induced shift in the centroids of the images is less than 10μm (0.067”). The FADC can work up to the field of 5’ at Cassegrain focus and its image quality is similar to its on axis performance. Our on-sky demonstration results agree well with our simulations.

Paper Details

Date Published: 7 August 2014
PDF: 10 pages
Proc. SPIE 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 91511N (7 August 2014); doi: 10.1117/12.2055573
Show Author Affiliations
Jessica Zheng, Australian Astronomical Observatory (Australia)
Jon Lawrence, Australian Astronomical Observatory (Australia)
Will Saunder, Australian Astronomical Observatory (Australia)
Sam Richards, Australian Astronomical Observatory (Australia)

Published in SPIE Proceedings Vol. 9151:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation
Ramón Navarro; Colin R. Cunningham; Allison A. Barto, Editor(s)

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