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prominence

Prominences 1891

Prominences 1891

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

Hydrogen Flames 1893

Hydrogen Flames 1893

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

Sunspot Sketch 1890

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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