Ad Astra Observatory

My journeys among the stars

MOST COMMENTED

http://www.fer3.com/arc/m2.aspx?y=200210&i=007828
http://www.jgiesen.de/astro/solarday.htm
http://www.prairienet.org/cuas/faqcalc.html
http://star-www.st-and.ac.uk/~fv/webnotes/index.html
http://www.willbell.com/math/mc1.htm

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