The original instrument to occupy the dome was the 10.5-inch Bausch telescope, which was installed in the new observatory building in 1953. The 25-foot diameter dome was necessary to encompass the ...

Construction of the world's largest telescope moves forward with progress of the structure's dome and housing for the primary mirror. The European Southern Observatory's (ESO) Extremely Large ...

The Equatorial Group is a group of six telescope domes, making up the primary observatory site. Whereas most telescope domes use a grey or white color, the Equatorial Group telescopes were built ...

Rainbow over Herstmonceux in 1981. The observatory dome in the picture used to house Isaac Newton telescope, which is now situated at La Palma in the Canary Islands. | Credit: Barry Shimmon ...