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Cristian Monea

16 Iul 2009 12:58



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Poti citi si aici:
http://www.amateurastronomy.com/tools.html (in partea de jos a paginii)
http://www.skyandtelescope.com/howto/diy/3306876.html (in partea de jos a paginii)
http://www.skyandtelescope.com/howto/diy/3306991.html?c=y&page=1
http://sci.tech-archive.net/Archive/sci.astro.amateur/2008-01/msg00044.html
http://www.larrydsmith.com/astro/collimation.html