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Date: 2007-12-18 12:22:24Astronomy Eyepiece Lenses Magnification Optical devices Cassegrain reflector Telescopic sight Binoculars Astroscan Telescopes Observational astronomy Telescope types | Microsoft Word - Advanced Amateur Info[removed]docAdd to Reading ListSource URL: www.mtwilson.eduDownload Document from Source WebsiteFile Size: 359,79 KBShare Document on Facebook |