The Helmos or Chelmos Observatory () is an observatory located at the top of mount

Chelmos Aroania (), also known as Helmos or Chelmos (Χελμός, from South Slavic , "summit"), is a mountain in Achaea, Peloponnese, Greece. At 2,355 m elevation, Aroania is the third highest mountain of the Peloponnese, after Taygetus and Kyllini, ...

, near

Kalavryta Kalavryta () is a town and a municipality in the mountainous east-central part of the regional unit of Achaea, Greece. The town is located on the right bank of the river Vouraikos, south of Aigio, southeast of Patras and northwest of Tripoli, G ...

, southern

Greece Greece, officially the Hellenic Republic, is a country in Southeast Europe. Located on the southern tip of the Balkan peninsula, it shares land borders with Albania to the northwest, North Macedonia and Bulgaria to the north, and Turkey to th ...

. It is the largest research infrastructure of the

National Observatory of Athens The National Observatory of Athens (NOA; ) is a research institute in Athens, Greece. Founded in 1842, it is the oldest List of research institutes in Greece, research foundation in Greece. The Observatory was the first scientific research insti ...

and IAASARS. The observatory was completed and first opened in 2001. Its main equipment is the Aristarchos 2.3 m Telescope, manufactured by German company

Carl Zeiss AG Zeiss ( ; ) is a German manufacturer of optical systems and optoelectronics, founded in Jena, Germany, in 1846 by optician Carl Zeiss. Together with Ernst Abbe (joined 1866) and Otto Schott (joined 1884) he laid the foundation for today's ...

and financed from the universities of

Patras Patras (; ; Katharevousa and ; ) is Greece's List of cities in Greece, third-largest city and the regional capital and largest city of Western Greece, in the northern Peloponnese, west of Athens. The city is built at the foot of Mount Panachaiko ...

and

Manchester Manchester () is a city and the metropolitan borough of Greater Manchester, England. It had an estimated population of in . Greater Manchester is the third-most populous metropolitan area in the United Kingdom, with a population of 2.92&nbs ...

See also