Eliminating the Coriolis effect in liquid mirrors

Authors
Citation
P. Hickson, Eliminating the Coriolis effect in liquid mirrors, PUB AST S P, 113(790), 2001, pp. 1511-1514
Citations number
8
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Space Sciences
Journal title
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
ISSN journal
0004-6280 → ACNP
Volume
113
Issue
790
Year of publication
2001
Pages
1511 - 1514
Database
ISI
SICI code
0004-6280(200112)113:790<1511:ETCEIL>2.0.ZU;2-Z
Abstract
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 fun ction of latitude and the mirror rotation rate, is on the order of 10 " for current telescopes. This result removes the last fundamental obstacle to a chieving diffraction-limited performance with large liquid mirrors.