Author: Russ

Amateur astronomers

  Almost 300 personal web pages of amateur and professional astronomers here

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Astral nav another tutorial

This interactive site allows you to obtain all the astronomical information necessary to plot navigational lines of position from observations of the altitudes of celestial…

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HMNAO also produces astronomical data suitable for a wide range of users, including professional and amateur astronomers, mariners, aviators, surveyors, the armed forces, lawyers, religious…

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