[Triangulation and Astronomy in the Kingdom of Poland] Carl Tenner (1783–1860), general, head of the Triangulation Service of the Kingdom of Poland. Letter to the director of the astronomical observatory regarding scientific matters. Dated Warsaw, Novembe

28 x 20 cm;
In German. In the general’s handwriting. On a printed form with the following text in Russian: “Head of Triangulation of the Kingdom of Poland.” A document on scientific matters related to astronomy, presenting measurements and scientific findings. General Karol Tenner was the founder of modern geodetic research in Russia. Previously, he worked in Vilnius, Grodno, and Minsk, among other places, conducting pioneering research. He was one of the most renowned researchers of his era. He conducted research on the Earth’s meridian, known as the “Struve-Tenner Arc.” He was appointed a senator of the Kingdom of Poland in 1854. He received the Order of the White Eagle. He died in Warsaw and was buried there at the Evangelical cemetery;
Condition: good.