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Date: 2011-04-13 13:55:18Optics Astronomy Eyepiece Camera lens Televue Telescopic sight Triplet lens Dew shield Refracting telescope Observational astronomy Telescopes Lenses | Argo Navis VS Sky CommanderAdd to Reading ListSource URL: www.williamoptics.comDownload Document from Source WebsiteFile Size: 252,86 KBShare Document on Facebook |