Armagh Observatory is an astronomical research institute in Armagh, Northern Ireland. Around 25 astronomers are based at the observatory, studying stellar astrophysics, the Sun, Solar System astronomy and Earth's climate.
There are scale models of the Solar System and the Universe, two sundials and historic telescopes, as well as telescope domes and other outdoor exhibits. The Human Orrery, launched in 2004, is located close to the main Observatory building. The Observatory's specialist library and archives, and collections of scientific instruments and artefacts associated with the development of modern astronomy, represent one of the leading collections of its kind in the British Isles.