Liquid mirror surface aberrations. I - Wavefront analysis

Details Liquid mirror surface aberrations. I - Wavefront analysis Liquid mirror surface aberrations. I - Wavefront analysis

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...391..409g&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 391, no. 1, May 20, 1992, p. 409-417. Research supported by NSERC.

Astronomy and Astrophysics

Astrophysics

5

Aberration, Liquid Surfaces, Mirrors, Rotating Fluids, Wave Front Deformation, Coordinate Transformations, Coriolis Effect, Earth Gravitation, Gravitational Fields, Perturbation Theory, Telescopes

Scientific paper

Five sources of wavefront aberration for rotating liquid mirrors are investigated: the earth's curvature, Coriolis force, and gravitational field gradient perpendicular to the mirror surface, symmetry axis misalignment, and lunar tides. Coriolis effects provide the single largest perturbation, introducing correctable stigmatic and pseudocomatic images of up to 10 in. in diameter for a typical 10 m-class mirror. The curvature of the earth, gravitational field gradient, and lunar tides all have negligible effects on the surface of the liquid mirror. Small axis misalignments do not introduce any wavefront aberration.

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