Freeware Planetarium Software Review 2009
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| Celestia http://www.shatters.net/celestia/ One of the better "Universe tour" type programs, fly out to the planets and fly around. Celestia is a great program to get you young ones enthused about the night sky. Not a planetarium program for the amateur astronomer, but still worth wasting some time on a cloudy night. Requires a modern pc to run adequately. The rating here only reflects its use as a planetarium, it would obviously score much higher if Universe visualisation software was being reviewed.
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| Asynx http://www.asynx-planetarium.com/ Dated interface,similar to hnsky but with less slightly functionality. Still a capable planetarium program at a good price (free).
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| Cnebulax http://www.uv.es/jrtorres/CNebulaX.htm Not the prettiest or easiest interface, but it excels for charting deep sky objects, over a million in its catalogue.
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| HNsky http://www.hnsky.org/software.htm Somewhat dated interface,but still easy to navigate around. The simple interface hides many advanced features that the amateur astronomer will find useful, the starfields as show enough labels to be provide practical navigation, without cluttering the scene. HNsky also has quite a few addons, supplemental data, and advanced features (Such as ASCOM telescope control) to make it a contender for the serious amateur. The program appears to be under active development, with active contributions. The full package has high quality images of the planets and deep sky objects. In summary - Not the slickest interface, but still of considerable use to the amateur astronomer.
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| Cartes du Ciel (Skychart) http://www.ap-i.net/skychart/ http://www.stargazing.net/astropc/index.html Open source, cross platform. Somewhat dated interface, but still functional for a modern computer user. It isn't pretty like stellarium, but does have a number of more advanced features for the serious amateur that stellarium is lacking, such as telescope control, mirroring views, accurately setting field of view. This program may well be worth checking out if you have been observing for a while and want to play with something a little more advanced than stellarium.
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| Stellarium http://www.stellarium.org Probably the easiest to use of the free planetarium programs. It has a slick, functional interface, and is the only free software reviewed here that actually looks like it belongs in this century and not the last. Navigation is by mouse drag and zooming is by mouse wheel, which makes getting around easy. It may lack some some advanced features for the serious amateur. No comet or asteroid database, no telescope control. Stellarium has without doubt the best interface of any of these programs both for ease of use and stunning good looks, but it does require a modern pc to run adequately.
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To look at commercial astronomy software, or just to support this review please click a link below
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