Image: Lowell astrograph
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Description: 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.
Title: Lowell astrograph
Author: Taken by Pretzelpaws with a Casio Exilim EX-Z750 camera. Cropped 8/16/05 using the GIMP.
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC-BY-SA-3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0/
Attribution Required?: Yes
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