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Large Equatorial, Sydney Observatory. Object Glass 11 1/2 Inches
Public domain

Large Equatorial, Sydney Observatory. Object Glass 11 1/2 Inches

anonymous · c. 1882 - in or before 1892 · collotype; paper

From the collection of Rijksmuseum, Amsterdam. Free to download, adapt and use — no permission needed.

Subjects
photomechanical printpageobservatory (~ astronomy)optical instruments
Credit lineLarge equatorial, Sydney Observatory. Object glass 11 1/2 inches. c. 1882 - in or before 18. anonymous. Rijksmuseum, Amsterdam. Public domain.
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