1 July 1990 Liquid mirrors: a progress report
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Abstract
Since liquid mirrors are potentially useful in science (e.g., astronomy, atmospheric sciences, and optical testing), work has been undertaken to determine whether they are technologically feasible. A testing tower has been equipped with a scatterplate interferometer interfaced with a CCD for data acquisition and a microcomputer for data analysis. This equipment was used to test a 1.5-m-diameter f/2 liquid mirror, showing that it is diffraction limited; interferometric measurements give Strehl ratios of order 0.8. A 2.7-m-diameter liquid mirror and astronomical observatory presently under construction is briefly described.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ermanno F. Borra, Robert Content, Mark R. Drinkwater, Luc Girard, Louise Tremblay, Stan Szapiel, Brad K. Gibson, Paul Hickson, Christopher L. Morbey, "Liquid mirrors: a progress report", Proc. SPIE 1236, Advanced Technology Optical Telescopes IV, (1 July 1990); doi: 10.1117/12.19199; https://doi.org/10.1117/12.19199
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KEYWORDS
Mirrors

Liquids

Mercury

Point spread functions

Astronomy

Optical telescopes

Charge-coupled devices

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