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rotary roof
[[File:CFW Telescope.JPG|thumbnail|The Canada-France-Hawaii telescope atop Mauna Kea, Hawaii]]
[[File:CFW Telescope.JPG|thumbnail|The Canada-France-Hawaii telescope atop Mauna Kea, Hawaii]]
[[File:Embry-Riddle Observatory One-Meter RC.jpg|200px|thumbnail|1-meter F/8 Ritchey–Chrétien reflector inside the Embry-Riddle Observatory]]
[[File:Embry-Riddle Observatory One-Meter RC.jpg|200px|thumbnail|1-meter F/8 Ritchey–Chrétien reflector inside the Embry-Riddle Observatory]]
An '''observatory''' is a building, usually placed high away from city lights and air [[pollution]], that is used primarily as a housing for a large [[telescope]]. The building is usually dome shaped, and allows the telescope to be aimed in any direction, with a slit in the dome (which can rotate) to allow the telescope to access the sky.
An '''observatory''' is a building, usually placed high away from city lights and air [[pollution]], that is used primarily as a housing for a large [[telescope]]. The building is usually dome shaped, and allows the telescope to be aimed in any direction, with a slit in the dome (which can rotate) to allow the telescope to access the sky. The slit only allows for viewing through the roof in a single direction, but the entire roof can be rotated to change the direction of view.
[[Category:Astronomy]]
[[Category:Astronomy]]