Editing Dutch Open Telescope (section)

{{Short description|Solar telescope in the Canary Islands}}
{{Infobox Telescope
| locmapin= Spain Canary Islands}}
The '''Dutch Open Telescope (DOT)''' is an optical [[solar telescope]] located on [[Roque de los Muchachos Observatory]], [[La Palma]] (near the [[Swedish Solar Telescope|Swedish 1-m Solar Telescope]]). With a main mirror of 45 centimeters, it can reach an 0.2 [[arcsecond|arcsec]] resolution for sustained periods. For further optimization of the images, the DOT uses the image despeckle mechanism. It was used to record movies of the 2004 [[Transit of Venus|Venus transit]].<ref>{{Cite web |url=https://robrutten.nl/dot/DOT_2004.html |title=DOT and the 2004 Venus transit |website=robrutten.nl |access-date=9 June 2024 |author=R.J. Rutten}}</ref>

The open design was a departure from vacuum-style solar telescopes, and helped pave the way for bigger solar telescopes.<ref name=":0">{{Cite web|url=http://adsabs.harvard.edu/full/1999ASPC..158...57R |title=The Dutch Open Telescope 1999ASPC..158...57R Page 57 |website=adsabs.harvard.edu |access-date=9 June 2024 |author1=R.J. Rutten |author2=R.H. Hammerschlag |author3=F.C.M. Betonville |date=1999}}</ref>
[[Image:DOT main mirror.jpg|thumb|right|Main mirror of the DOT]]