Physics – Optics
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21320008a&link_type=abstract
American Astronomical Society, AAS Meeting #213, #200.08; Bulletin of the American Astronomical Society, Vol. 41, p.187
Physics
Optics
Scientific paper
The 2.1-meter telescope (1964) had the following innovations: (1) an unusually fast f/2.6 primary and f/8 Cassegrain focus that allowed for a small cheaper dome, (2) Ritchey-Chretien coma-free optics, (3) a Pyrex mirror made with the slumping process that was ground and polished in 1.5 years, (4) a flip-top secondary allowing 5-minute conversion between Cassegrain and coude foci, and (5) fast high-resolution spectrographs. Those features led to the discovery of the Lyman-alpha forest, the first gravitational lens, the first pulsating white dwarf, and the realization that most solar-like stars have companions. Such discoveries were possible because of (1) fast high-resolution equipment, (2) competitive time scheduling, and (3) relatively long observing runs that allowed for experimentation.
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