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Ben Gross@bhgross144.bsky.social |
Question for any early modernists/historians of #astronomy in the audience: Would you be willing to help a grad student interpret this diagram from Christoph Scheiner's Rosa Ursina? What are we looking at here?
Source link: catalog.lindahall.org/discovery/de...
#histSTM #histsci #histastro🗃️📜
3 replies 21 reposts 13 likes
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Dr Surekha Davies (she/her)
@drsurekhadavies.bsky.social
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I'm guessing that @karlgalle.bsky.social knows all the things!
0 replies 0 reposts 1 likes
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Thony Christie
@rmathematicus.bsky.social
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As @astro_doris had already pointed out on X–Twitter its the plate of Gema Frisius' universal astrolabe
0 replies 0 reposts 3 likes
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David ALBERTO
@astrolabe-science.fr
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All I can tell is that it's a stereographic projection, apparently on the ecliptic plane (since the degrees on the edge mark the Sun's location across the year). The point of view would be the south ecliptic pole. But I don't see exactly how it's related to sunspots as the title says.
0 replies 0 reposts 2 likes