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Astronomical sextant

Astronomical sextant

R102/0258

Rights Managed

51.1 MB (5.6 MB compressed)

3435 x 5200 pixels

29.0 x 43.9 cm ⏐ 11.4 x 17.3 in (300dpi)

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Credit

DETLEV VAN RAVENSWAAY / SCIENCE PHOTO LIBRARY DETLEV VAN RAVENSWAAY / SCIENCE PHOTO LIBRARY

Caption

Astronomical sextant. Historical artwork of Johannes Hevelius (1611-1687) and his wife Elisabetha (1647-1693) observing with a sextant designed by Johannes in about 1658. Sextants were used for measuring the angle of an object, usually the Sun, above the horizon. Here, Elisabetha is aligning the instrument, while Johannes sets the alidade (index arm).

Release details

Model release not required. Property release not required.

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