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Trouvelot, E. L. (Etienne Leopold)

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The Trouvelot astronomical drawings manual
The Trouvelot astronomical drawings manual

Group of Sun Spots and Veiled Spots. Observed on June 17th 1875 at 7 h. 30 m. A.M.
Group of Sun Spots and Veiled Spots. Observed on June 17th 1875 at 7 h. 30 m. A.M.

Solar Protuberances. Observed on May 5, 1873 at 9 h. 40 m. A.M.
Solar Protuberances. Observed on May 5, 1873 at 9 h. 40 m. A.M.

Total Eclipse of the Sun. Observed July 29, 1878, at Creston, Wyoming Territory.
Total Eclipse of the Sun. Observed July 29, 1878, at Creston, Wyoming Territory.

Aurora Borealis. As observed March 1, 1872, at 9 h. 25 m. P.M.
Aurora Borealis. As observed March 1, 1872, at 9 h. 25 m. P.M.

The Zodiacal Light. Observed February 20, 1876.
The Zodiacal Light. Observed February 20, 1876.

Mare Humorum. From a Study made in 1875.
Mare Humorum. From a Study made in 1875.

Partial Eclipse of the Moon. Observed October 24, 1874.
Partial Eclipse of the Moon. Observed October 24, 1874.

The Planet Mars. Observed September 3, 1877, at 11 h. 55 m. P.M.
The Planet Mars. Observed September 3, 1877, at 11 h. 55 m. P.M.

The Planet Jupiter. Observed November 1, 1880, at 9 h. 30 m. P.M.
The Planet Jupiter. Observed November 1, 1880, at 9 h. 30 m. P.M.