Optical design for the AdOpt@TNG module

Adriano Ghedina; Roberto Ragazzoni; Enrico Marchetti

doi:10.1117/12.268974

21 March 1997 Optical design for the AdOpt@TNG module

Adriano Ghedina, Roberto Ragazzoni, Enrico Marchetti

Author Affiliations +

Proceedings Volume 2871, Optical Telescopes of Today and Tomorrow; (1997) https://doi.org/10.1117/12.268974
Event: Optical Telescopes of Today and Tomorrow, 1996, Landskrona/Hven, Sweden

Abstract

The authors describe characteristics and key results of the optical design for adaptive optics at the Galileo telescope. Two off axis parabolae are used to image the pupil on the deformable mirror, and in order to keep to a minimum the number of reflections, one of them is used as tip-tilt mirror. The several constraints, both mechanical and optical, which led to the definitive design are reported (pupil position, effective focal ratio, off axis performances, size of the module . . .). Because tip-tilt is realized through tilting of a non-flat mirror care has been given to the deterioration and distortion of the image for a given range of misalignment of the off axis parabola.

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Adriano Ghedina, Roberto Ragazzoni, and Enrico Marchetti "Optical design for the AdOpt@TNG module", Proc. SPIE 2871, Optical Telescopes of Today and Tomorrow, (21 March 1997); https://doi.org/10.1117/12.268974

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