Old Maps Collection
Vlasbloem, Louis, fl. 1646-1670, author
JPEG 8269 × 6557, 62.8MB
Scale not given.
Physical Map Dimension (cm):
39 x 52 cm, on sheet 57 x 83 cm
This double hemisphere celestial chart by Louis Vlasbloem derives from the one in Joan Blaeu's (1596-1673) world map. Vlasbloem was a physician and mathematician who, around 1675, produced a pair of celestial hemispheres that were bound in a number of sea atlases by Van Keulen, which is the case. The ancillary maps depict the geo-centric and helio-centric configurations of the solar system. The expansion of Dutch maritime trade in the late 16th century and early 17th century provided new astronomical knowledge of the Southern hemisphere. By 1598 twelve new constellations formed by Petrus Plancius (1552-1622) appeared on a Jodocus Hondius (1563-1612) globe, these were added to the Ptolemaic canon of 48 constellations making a total of 60. The newly discovered constellations of the southern hemisphere include: Pavo, Phoenix, Indus, among others with Coma Berenices in the north. The maps seems to be centered on the ecliptic pole, using a stereographic projection with external orientation. This map is nearly identical to Blaeu's rare celestial plan.
Hypothesis Ptolemaica. - 10 cm. -- Hypothesis Copernicana. - 10 cm.
Original is a copperplate printed map, watercolored by hand, 39 x 52 cm.
Title inside banderole watercolored in magenta.
Legend for the number os stars underneath the double hemispheres.
Kanas, N. Star Maps: History, Artistry, and Cartography, p. 495
Northern sky (Astronomy)
Southern sky (Astronomy)
Grand nouvel atlas de le mer, ou Monde aquatique.
Keulen, Johannes van, 1654-1715
Harvard College Library
Provenance Call No.:
MA 17.82.2 pf*