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De maculis solarib. et stellis circa Iouem errantibus : accuratior disquisitio, ad Marcum Velserum ... perscripta. Interiectis obseruationum delineationibus (1612)

Scheiner, Christoph, 1575-1650 · Augustae Vindelicorum : Ad insigne Pinus · leaf 34

An illustration from De maculis solarib. et stellis circa Iouem errantibus : accuratior disquisitio, ad Marcum Velserum ... perscripta. Interiectis obseruationum delineationibus, 1612, leaf 34
2$ DE MACVLIS … runtá loue diftantia;& ad fe magnitudinis proportione,iteme que ad oculum é terra illas confpicientem optico profpe&u,. hora denotata. B punctum orientale. C. occidentale. r, 2, 5, & reliqui füprainfcripti numeri; feptentrionem. occupant, illis oppofita inferiorpars,auftrum refpicit.…

Sunspots · Astronomy -- Early works to 1800

Internet Archive · Fisher - University of Toronto · Public domain (published before 1931). Free to use for anything.

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