... Thousand Oaks Optical, Box 248098, Farmington, Ml 48332-8098, 313-353-6825. ... filters, and solar filters that operate at the eyepiece of telescopes or binoculars ... League, and "Unsafe Solar Filters,'' by B. Ralph Chou, Sky Telescope, August 1981 ...
... so his ship turned back to sea, where he could not effectively use a telescope ... The telescope was in its infancy for the pair of transits prior to Le Gentil's ... Unfortunately, the limitations of the telescopes and other factors gave rise to a ...
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Ссылки http://www.astrosociety.org/edu/publications/tnl/78/uitc78.pdf -- 685.5 Кб -- 02.10.2012 Похожие документы
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