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The reason is that telescopes need to be able to look at any place in the sky, including low down. The best way to do this is have a slot in the roof, and to have the roof rotate. The best way to do all that is to have a dome for a roof. There are other shapes in use: Small telescopes frequently have a cube-shaped shed that just rolls away leaving the entire telescope out in the air. Also, there is now a trend towards 8-sided roofs with sides that completely open. This design allows air to flow across the telescope and makes everything the same temperature as the outside air. This reduces turbulence and improves the quality of the images.

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What is a hemispherical roof?

A hemispherical roof is a type of roof that is shaped like a half-sphere. It is a rounded, dome-like structure that covers the top of a building or structure. Hemispherical roofs are known for their unique design and are often used in architectural structures like observatories or planetariums.


What is a synonym for astronomical observatories?

One synonym for astronomical observatories is "space observatories."


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One disadvantage of a dome-shaped roof is that it can be more expensive to construct compared to traditional flat or sloped roofs. Additionally, dome roofs may require more specialized maintenance and repairs due to their unique shape, which can also increase overall costs. Finally, the interior space under a dome-shaped roof may have limited usable space or design flexibility compared to other roof styles.


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