Joseph Johann von Littrow

Joseph Johann von Littrow (13 March 1781, Horšovský Týn () – 30 November 1840, Vienna) was an Austrian astronomer. In 1837, he was ennobled with the title Joseph Johann Edler von Littrow. He was the father of Karl Ludwig Edler von Littrow.

He became director of the Vienna Observatory in 1819. He served in this position until his death in 1840. He created the only conformal retroazimuthal map projection, which is known as the Littrow projection. Littrow authored the widely read ''Wunder des Himmels'' ("Miracles of the Sky"), which was reprinted eight times by 1897.

In 1810, his work took him to Russia for six years. He taught at the Kazan University and established Europe's easternmost astronomical observatory there (now a World Heritage site). It was in Russia that his son who succeeded him was born. Von Littrow also mentored the mathematician Nikolai Brashman, suggesting he should continue his career in Russia.

Von Littrow is often associated with a proposal to dig a large circular canal in the Sahara desert and fill it with burning kerosene, thus communicating the fact of human intelligence to aliens who may be observing Earth. However, Von Littrow's connection with this scheme may be apocryphal.

The crater Littrow on the Moon is named in his honor.

He is the great-great-great-grandfather of Roman Catholic Cardinal Christoph Schönborn. Provided by Wikipedia