"Does anyone have a suggestion for a planetarium software (cheap or free) that would meet my needs that I could -teach 8th grade students- how to use? We use PCs with Windows 2000. The list of software here http://satobs.org/orbsoft.html#IBM is a bit overwhelming, albeit very useful. " Do you do any programming at all? As an example, I have a small sat prediction program which I designed for access from my cell phone (you can see it at www.fer1.com). The code is not too complicated, if you want to try to make your own version. It does not use the long algorithms for satellite orbital motion --just precessing Keplerian ellipses-- but it works within a couple of tenths of a degree in most cases. -FER 42.0N 87.7W, or 41.4N 72.1W. www.HistoricalAtlas.com/lunars ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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