Mount Diablo Astronomical Society

M.D.A.S. was formed in 1957 as part of the National “Moonwatch” program established to time the first man-made satellites so accurate orbits could be calculated.

Contact Information

P.O. Box 4889
Walnut Creek 94596-3754

Phone: (925) 695-3134

http://www.mdas.net/

 
 
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