« John Dobson -14 September 1915 to 15 January 2014

25-f4-Chaco-Observatory

25-f4-Chaco-Observatory

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A 25″ Obsession Dobsonian, a scope that would not be possible without the work of John Dobson. Credit: Obsession Telescopes (http://www.obsessiontelescopes.com/index.php)

25-f4-Chaco-Observatory

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