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Date: 2004-09-24 12:59:29Science Optical telescope Primary mirror Newtonian telescope Reflecting telescope European Southern Observatory Hale telescope Cassegrain reflector La Silla Observatory Telescopes Observational astronomy Astronomy | Reflecting Telescopes Reflecting TelescopesAdd to Reading ListSource URL: www.astro.caltech.eduDownload Document from Source WebsiteFile Size: 50,05 KBShare Document on Facebook |