I Believe that Starry Night required too much space for my computer. I hope that helps.
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I use stellarium,its free and works well.Also you can pick your location from a map.
Wally
Wally
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I use stellarium for glancing at where to find planets, moons, and constellations for my expected observing time. It is user-friendly and visually pleasing for demos and pointing out stuff to classrooms, etc. If I want to make my own charts for star-hopping, I use Cartes du Ciel. It is also a free download at:
http://www.ap-i.net/skychart/start
http://www.ap-i.net/skychart/start
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I-phone app Star guide