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Accurately calculates light and radial velocity curves for almost any type of binary, simultaneously displaying the theoretical and observed curves as well as a 3-D model of the orbiting stars
http://www.binarymaker.com/
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Calculates the position of planets and give their appearance
http://lastrophoto.fr/AstroCalc_en.html
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Astronomical observation planning, logging and telescope control software.
http://www.ilangainc.com/astroplanner/
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Pocket PC Software designed for recording the timings of lunar grazings, ocultations, transits, meteor showers and any other astronomical observation that needs a record of the date and time to the nearest 10th of a second.
http://www.itslifejim.btinternet.co.uk/DawesAstro/software.htm
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Provides sunrise, sunset, moonrise, moonset and lunar phase information for any location on Earth .
http://www.spudcity.com/d12/D12_astro.htm
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Free astronomy Excel spreadsheet calculations and graphs.
http://www.astroexcel.de/
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Palm OS astronomy tool which helps you to organize your observation session.
http://www.astromist.com/
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Manage astronomical images and catalogs, allow robotic observations, astrometry and photometry.
http://www.astromb.com/
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Observation planning and logging with telescope control.
http://www.astroplanner.net/
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Optical and Imaging calculator. Use for all aspects of Astrophotography from imaging characteristics, resolution to exposure and more.
http://www.astrocalculator.com/
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