Wind-tunnel study of an observatory dome with a circular aperture

Details Wind-tunnel study of an observatory dome with a circular aperture Wind-tunnel study of an observatory dome with a circular aperture

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pasp..103.1211z&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 103, Nov. 1991, p. 1211-1217.

Astronomy and Astrophysics

Astronomy

Aerodynamic Loads, Astronomical Photography, Domes (Structural Forms), Image Processing, Structural Vibration, Wind Tunnel Tests, Astronomical Observatories, Telescopes, Wave Fronts

Scientific paper

Results are presented from wind tunnel tests of the novel, 'fixed shutter' observatory dome concept, which is intended to minimize wind shake effects. In order to enclose larger telescopic apertures, this design allows an upper spherical segment to rotate under a shell of slightly larger diameter which is fixed to a lower rotatable segment. A side-by-side wind tunnel test comparison of this and a conventional dome shows that the mean and fluctuating velocity through the aperture and in the center of the new dome are lower than those of conventional domes, thereby lowering the likelihood of flow-induced telescope vibration.

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