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RASC lantern slide gallery #2.
Crux/Coalsack region. Photo by H.C. Russell. 3 hours, 13 Aug. 1890.
Great Nebula in Orion, 15 Dec 1886. A.J. Reading, Toronto, Ont.
The Great Nebula in Orion. A.J. Reading, Toronto, Ont.
Nova Persei, 20 Sept. 1901.
Sunspots, 3 March 1922, Hamilton, Bermuda. Dr. Marsh.
Change in Ha floculi, 7 Aug. 1915. Mt. Wilson Solar Ob'y.
Change in Ha floculi, 9 Aug. 1915. Mt. Wilson Solar Ob'y.
Change in Ha floculi, 5 Aug. 1915. Mt. Wilson Solar Ob'y.
Change in Ha floculi, 3 Aug. 1915. Mt. Wilson Solar Ob'y.
Transit of Venus, 6 Dec. 1882. Samuel Cooper, Dorset England.
