https://cunnan.lochac.sca.org/api.php?action=feedcontributions&feedformat=atom&user=60.190.79.18 2026-06-28T20:33:54Z User contributions MediaWiki 1.39.3 https://cunnan.lochac.sca.org/index.php?title=Astrolabe&diff=32273 2007-04-17T19:24:43Z

<p>60.190.79.18: </p> <hr /> <div>[[Image:Astrolabe.png|thumb|right|A period drawing of an astrolabe]]<br /> <br /> The '''astrolabe''' is an ancient [[astronomy|astronomical]] calculator for determining time and the positions of the [[Sun]] and [[star]]s.<br /> <br /> There are several types of astrolabe including the planispheric astrolabe, on which the celestial sphere is projected onto the plane of the equator.<br /> <br /> Astrolabes were typicaly made from [[brass]] with a diameter of around 15cm.<br /> <br /> == Period construction ==<br /> The following instructions for constructing an Astrolabe are from &quot;The arte of nauigation&quot; by Cortes, Martin (1532-1589), published in 1572.<br /> :'''The.vii.Chapter, of the making and vse of the Astrolabie, with the whiche the Marryners take the altitude of the Sunne.'''<br /> <br /> :Take a plate of copper, or laton, (which for this purpose is better then any other metal) of the bignesse that you desire to make the Astrolabie,</div>

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