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Dutch Open Telescope
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== Custom designed roof == [[Image:Dutch Open Telescope Mirror.jpg|thumb|right|Close-up of the DOT mirror]] Another novel feature of the DOT is the roof which is made of a special polymer fibre which retains its shape after being stretched and does not loosen after time. The shape of the several roof sections are made in such a way that they are always under tension when closed, so it is stronger (i.e., the sections are saddle-shaped). Patterning and test installation of this specific skin is done in cooperation with the team of Poly-Ned who made more retractable coverings for telescope structures. Example of other similar projects is [[GREGOR]] project on Tenerife. A high UV resistance PVC coated Polyester weave is important for this kind of structuresm, called ''Textielarchitecture'' in Dutch.
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