Eliminating the Coriols Effect in Liquid Mirrors

Details Eliminating the Coriols Effect in Liquid Mirrors Eliminating the Coriols Effect in Liquid Mirrors

2001-08-18

arxiv.org/abs/astro-ph/0108306v1

Astronomy and Astrophysics

Astrophysics

8 pages 1 figure, submitted to PASP

Scientific paper

10.1086/324416

If uncorrected, the Coriolis force due to the rotation of the Earth causes significant aberration of images produced by large liquid-mirror telescopes. We show that this problem can be eliminated by a fixed compensating tilt of the liquid-mirror rotation axis. The required tilt angle, which is a function of latitude and mirror rotation rate, is of order 10 arcsec for current telescopes. This result removes the last fundamental obstacle to achieving diffraction-limited performance with large liquid mirrors.

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