John D. Callahan Information

URL	http://www.faithreason.org/grandtour/
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Contact	John D. Callahan
Email	johndcal at faithreason dot org

John D. Callahan Products
	GrandTour Accurate, flexible wireframe simulator for the Voyager and Giotto space missions, with animation capability. Developed at JPL for science/navigation, and filmed by the BBC/NOVA. Conveniently runs from any Windows/DOS. Download Now