File:Lowell astrograph.jpg

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English: Tombaugh used Lowell Observatory's 13-inch (3 lens element), f/5.3 refractor astrograph, which recorded images on 14x17 inch glass plates, to discover Pluto.
Author Taken by Pretzelpaws with a Casio Exilim EX-Z750 camera. Cropped 8/16/05 using the GIMP.
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current10:34, 11 January 2006Thumbnail for version as of 10:34, 11 January 20061,995 × 2,976 (619 KB)Fanghong{{information| |Description =Astrograph at Lowell Observatory used in the discovery of Pluto. |Source =From [] |Date = 8/10/05 |Author = Taken by en:User:Pretzelpaws with a [[Exilim|Cas

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