At $18.99, Starmap Pro is much more expensive than most iPhone apps, but amateur astonomers of all levels will find it very useful. There is data for 2.5 million stars, multiple star catalogs, multiple deep sky objects catalogs, and data for the solar system. The “tonight” view shows an ordered list for objects that are best placed for viewing on a given night, and that list can even be sorted to show the order they’ll rise in the night sky, by objects best seen with the naked eye, with binoculars, or with a telescope. It can display in full color or in red only to protect your night vision. It works with both iPod touch or iPhone, but it does make use of the iPhone’s GPS to further tailor your night sky view. Starmap Pro is available through iTunes.
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