Stargazing 101 – Northern Hemisphere (PDF) April 15, 2015 by Brian Ventrudo [featured_image] Download Download is available until [expire_date] Version [version] Download 10610 File Size 1.18 MB File Count 1 Create Date April 15, 2015 Last Updated April 15, 2015 Stargazing 101 - Northern Hemisphere (PDF)