prominence

Prominences 1891

Sketches of solar prominences 1891 July 19 at 7h 30m, and three hours later.

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Hydrogen Flames 1893

Hydrogen Flames 1893 August 13 8h 30m (258°)

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Sunspot Sketch 1890

Sunspot and Hydrogen Flame

Sketched on 1890 Nov 30 and 1890 Aug 3 respectively. Published in TAPST 1890.

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