(a) mateur

(p) rofessional

ESO, the European Southern Observatory (p) 
http://www.in-berlin.de/User/jd/himmel/hotlist.html (List of other links)
Norman Lockyer Observatory, Devon, England (a) 
History of Astronomy (Astronomiegeschichte) (p) 

Antique Telescope Society
List of Bruce Medallists (p)

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This page created by Chris Plicht