Uraniborg

On the small island of Ven in the Öresund strait, Uraniborg was the observatory built by the Danish astronomer Tycho Brahe, and it stands as the first custom-built observatory in modern Europe.

About Uraniborg

Uraniborg was constructed between around 1576 and 1580 as both an astronomical observatory and an alchemy laboratory. It was the last major observatory built before the telescope became the primary astronomical instrument, relying instead on remarkably precise naked-eye instruments of Brahe's own design, including a Brass Azimuthal Quadrant (1576), a Great Globe with more than 1,000 etched stars (1580), a Triangular Sextant (1582), and a Great Equatorial Armillary (1585). These instruments achieved an accuracy of about one minute of arc — roughly ten times better than previous standards.

History

Tycho Brahe founded and operated Uraniborg, expanding the site with an underground facility called Stjärneborg. Research there spanned astronomy, alchemy, and meteorology. Brahe abandoned the site in 1597 after falling out of favour with King Christian IV of Denmark, and Uraniborg was destroyed in 1601 following Brahe's death. The island of Ven was later ceded to Sweden. Restoration of the grounds began in 1985, and the site is now preserved as a museum.

Location & getting there

Uraniborg sits on Ven, an island in the Öresund between Zealand and Scania, within what is now Sweden, part of the wider Europe region.

Visiting Uraniborg

The restored grounds of Uraniborg are open to visitors as a heritage site; check current opening arrangements before travelling to Ven.

See your named star from here

Brahe's instruments once mapped the sky with painstaking precision, and the same principle applies today: a telescope can be pointed at the exact coordinates of any named star. Name a star of your own, or explore the catalogue of stars already dedicated.