... Dropped refractor fixtures. These fixtures are everywhere. ... Our common street lights are dropped refractor "cobra heads," so named because of ... They have a glass lens or refractor which is "dropped" (hangs down below the fixture ...
... This disc can contain a maximum of 84% of all the light that arrives from a star (perfect refractor telescope). MCT : Maksutov-Cassegrain telescope. ...
... Comet Holmes, 17P, taken on November 1, 2007, with an A&M 105-mm f/5 refractor at f/5 with Borg 0.85x compressor/field flattener and a Canon 20Da camera at ISO400. ...
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Ссылки http://www.stsci.edu/~mutchler/documents/Comet_Holmes_SkyTel.pdf -- 241.4 Кб -- 04.11.2008 Похожие документы
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... Кудэ-рефрактор (coude-refractor) фирмы "Carl Zeiss" используется для получения снимков фотосферы Солнца, а также для получения фотографий ночного неба. ...
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... Although the disadvantage is if you put a refractor and a reflector against each other in a war of stellar viewing, the refractor would produce the higher quality show. ...