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Old 12-11-2010, 02:00 AM
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glenc (Glen)
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Join Date: Jun 2005
Location: Terranora
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James Dunlop's Deep Sky Objects

Alexander suggested a thread called Dunlop Month. Here it is.
James Dunlop cataloged clusters and nebulae from his backyard in Parramatta in 1826.
He was the second person to make a catalogue of southern deep sky object (DSO).
Nicolas-Louis de La Caille made the first catalogue in 1751-52 from Cape Town with a half inch refractor.
James Dunlop built his own 9" speculum reflector and found five times more objects than Messier. Messier used 7.5" and 8" reflectors.
Unfortunately Dunlop has been ignored over the years. He was a great observer.
Prior to 1840, William Herschel, John Herschel and James Dunlop discovered most of the NGC objects.
This IIS thread includes 172 Dunlop objects outside the Magellanic Clouds.

Last edited by glenc; 16-11-2010 at 07:25 AM.
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