Louis Niesten
Louis Niesten (1844–1920) was a Belgian astronomer working at the Brussels Royal Observatory. In 1877 he observed Mars and created a detailed map of its surface features.
He organized an expedition to
San Antonio, Texas to determine the planet's parallax during the same transit. Both parties used a specially designed heliometer
for this purpose.
A crater on Mars was named in his honor.
External links
- Description of the 1882 transit of Venus expeditions
- Mars globe presented by Louis Niesten to the Royal Astronomical Society
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