File:Astrolabe-Persian-18C.jpg

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Original file ‎(1,061 × 972 pixels, file size: 334 KB, MIME type: image/jpeg)

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current09:15, 3 January 2017Thumbnail for version as of 09:15, 3 January 20171,061 × 972 (334 KB)127.0.0.1 (talk)An 18th Century Persian astrolabe – maker unknown. The points of the curved spikes on the front <i>rete</i> plate, mark the positions of the brightest stars. The name of each star being labeled at the base of each spike. The back plate, or <i>mater</i> is engraved with projected coordinate lines. From the Whipple Museum of the History of Science in Cambridge.
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