What is Karl Schwarzschild Observatory?
The '''Karl Schwarzschild Observatory''' is a German [[Astronomy|astronomical]] [[observatory]] in [[Tautenburg]] near [[Jena]], [[Thuringia]]. {{Infobox observatory|child=|name=Karl Schwarzschild Observatory|image=File:Karl-Schwarzschild-Observatorium.jpg|caption=Karl Schwarzschild Observatory in 1981|alt_names=Thüringer Landessternwarte Tautenburg|namedafter=[[Karl Schwarzschild]]|organization=[[Thuringian]] State Observatory|code=[[List of observatory codes|033]]|location=[[Tautenburg]], Thuringia|coordinates=50°58′48.4″N 11°42′40.2″E|altitude=341 m (1,119 ft)|established=1960|website=|telescope1_name=Alfred Jensch Telescope|telescope1_type=Carl Zeiss reflector|image_map=|map_dot_label=}} It was founded in 1960 as an connection institute of the former [[German Academy of Sciences at Berlin]] and named in honour of the astronomer and physicist [[Karl Schwarzschild]]. In 1992, the institute was re-established as '''Thuringian State Observatory'''.<ref>{{Cite web|title=General|url=http://www.tls-tautenburg.de/TLS/index.php?id=15&L=1#c3|access-date=2022-11-22|website=www.tls-tautenburg.de|archive-date=2022-11-22|archive-url=https://web.archive.org/web/20221122055254/http://www.tls-tautenburg.de/TLS/index.php?id=15&L=1#c3|url-status=dead}}</ref> == Telescope == [[File:Alfred-Jensch-Teleskop-1.jpg|thumb|Alfred Jensch Telescope, the largest telescope located in [[Germany]].]] The observatory has the largest [[telescope]] located in [[Germany]], which is also the largest [[Schmidt camera]] in the world. Made by [[Carl Zeiss AG|VEB Zeiss Jena]], this instrument is known as ('''2m''') '''Alfred Jensch Telescope''': though its mirror is 2 metres in diameter, the telescope's aperture is 1.34 m. == Extrasolar planets and brown dwarfs observed == The observatory has observed many [[Extrasolar planet|extrasolar planets]] and [[Brown dwarf|brown dwarfs]] around the stars [[HD 8673]], [[30 Arietis]], [[4 Ursae Majoris]], and around [[HD 13189]] on 5 April 2005.<ref>{{Cite web|date=2015-07-20|title=A giant planet around t