CCD
Sunday, 24 April 2011 20:23
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http://www.eso.org/~ohainaut/ccd/CCD_proc.html
Bahtinov Mask
used for focusing
http://astrojargon.net/MaskGen.aspx?AspxAutoDetectCookieSupport=1
Last Updated on Monday, 25 April 2011 13:33