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Proceedings Paper

The compensation tests of ellipsoidal mirror with a scale of 1m and super large relative aperture
Author(s): Jun-he Pan; Ming-young Hu; Shi-dong Shen; Xi-Cai Liu
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Paper Abstract

On the basis of three-order aberration theory, only adopt the method of null test using compensation of a compensating lens and a field lens to compensate ellipsoidal mirror with a scale of 1m and super large relative aperture, and succeed to design a compensator of the ellipsoidal mirror that the radius of curvature of vertex is 1555mm, aperture is 1000mm and e2 is 0.9. Compared to compensator of ellipsoidal mirror with small aperture or small relative aperture, aperture of the compensating Lens is large and field lens is far from center of curvature of vertex of the ellipsoidal mirror, which destroys the conjugated relationship about field lens between compensating lens and the ellipsoidal mirror, and compensates aberration together with compensating lens. The result of design shows that the aberration is well corrected, and RMS below to λ/40 after fulfillment.

Paper Details

Date Published: 14 October 2010
PDF: 6 pages
Proc. SPIE 7654, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 76541P (14 October 2010); doi: 10.1117/12.867621
Show Author Affiliations
Jun-he Pan, Nanjing Astronomical Instrument Research Ctr. (China)
Graduate School of Chinese Academy of Sciences (China)
Ming-young Hu, Nanjing Astronomical Instrument Co. Ltd. (China)
Shi-dong Shen, Nanjing Astronomical Instrument Research Ctr. (China)
Graduate School of Chinese Academy of Sciences (China)
Xi-Cai Liu, Nanjing Astronomical Instrument Co. Ltd. (China)


Published in SPIE Proceedings Vol. 7654:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes

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