Don Signori's NexStar 50 Encyclopedia
Don Signori has a real talent for researching and presenting wonderfully useful information on various topics related to astronomy. After the announcement of the NexStar 50 List, Don produced a series of 'lessons' on all 50 of the list objects. This is superb information that adds a great dimension to your quest for the 50 objects. Download a PDF version of the compilation here.
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