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File:Dutch Open Telescope equatorial mount.jpg - Wikimedia Commons
Dutch Open Telescope | Observatorio Roque de los Muchachos. … | Flickr
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Dutch Open Telescope (DOT), is a solar telescope. The optical telescope uses the wind as a fan to ensure high-resolution images of the solar atmospher Stock Photo - Alamy
The Dutch Open Telescope (DOT) on La Palma. Left: open dome for solar... | Download Scientific Diagram