Introduction to Amateur Astronomyhttp://www.scribd.com/full/41184905?access_key=key-8h790ypf2y5x2r3o5l1
Introduction to Astrophotographyhttp://www.scribd.com/full/41185948?access_key=key-ro5p2f3hwwh4f204syn
Digital SLR Astrophotographyhttp://www.scribd.com/full/41186760?access_key=key-gnoflczzrljkxl1qzzd
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