Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979pasp...91..523w&link_type=abstract
Astronomical Society of the Pacific, Publications, vol. 91, Aug.-Sept. 1979, p. 523-529.
Astronomy and Astrophysics
Astronomy
2
Domes (Structural Forms), Heat Sources, Instrument Errors, Telescopes, Temperature Effects, Thermal Instability, Air Cooling, Cavitation Flow, Convective Flow, Design Analysis, Diurnal Variations, Energy Dissipation, Mixing Length Flow Theory, Optical Correction Procedure, Reflecting Telescopes, Thermal Boundary Layer
Scientific paper
Through the use of the mixing-length theory of convection, a theory of dome seeing and its relation to dome heat sources is developed. Comparison with limited observations and experiments in the literature suggest that the theory is numerically correct. Attention is given to heat sources that result from telescope and dome responding to diurnal temperature variations and frontal passages. It is noted that current designs and uses have problems and that as telescopes are made larger these problems increase. In conclusion, some solutions such as the use of light weight mirrors, insulation of telescope and dome steelwork, and the use of wider slits that give greater exposure to the observing floor are proposed.
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