The focal reduction method, its new applications, its limits on the use of the Very Large Telescope.

Details The focal reduction method, its new applications, its limits on the use of the Very Large Telescope. The focal reduction method, its new applications, its limits on the use of the Very Large Telescope.

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988vlti....2.1141c&link_type=abstract

ESO Conference on Very Large Telescopes and their Instrumentation, Vol. 2, p. 1141 - 1148

Computer Science

Performance

Vlt: Spectrography, Vlt: Fabry-Perot Interferometry, Vlt: Focal Reducers

Scientific paper

The focal reducer observing method has been designed since 1950 at the Marseilles Observatory for long slit, field spectrography and Fabry-Perot interferometry, with the main advantage to increase the final focal ratio of any telescope. The use of the new detectors, mainly CCD, was generalizing the focal reducer method on most of the large telescopes. Discussions for the very large telescopes of the future, like VLT, demonstrate new performances of the focal reducer but also some severe limitations due to the large size of these new telescopes as well as the constant improvement of the linear resolution of the next generation CCD. Anyway, some original solutions are suggested.

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