Liquid mirrors - Optical shop tests and contributions to the technology

Details Liquid mirrors - Optical shop tests and contributions to the technology Liquid mirrors - Optical shop tests and contributions to the technology

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...393..829b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 393, no. 2, July 10, 1992, p. 829-847. Research supported by NSERC and FCAR

Mathematics

Logic

44

Charge Coupled Devices, Liquid Surfaces, Reflecting Telescopes, Rotating Fluids, Rotating Mirrors, Light Scattering, Point Spread Functions

Scientific paper

The paper determines whether optical quality liquid mirrors are technologically feasible. Extensive interferometric tests of a 1.5 m diameter f/2 liquid mirror show that it is diffraction limited as they give Strehl ratios of order 0.8 and rms surface deviations of order lambda/20. Direct observations of the point spread function show that the mirror does not suffer an excessive amount of scattered light. The disturbances that can limit the optical quality of liquid mirrors and how to minimize them are discussed. Work carried out to improve the basic technology is discussed. The results of optical tests are described and technical information detailed enough that interested parties can successfully make liquid mirrors is given.

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