 The Dutch Open Telescope with the canopy closed. | |
| Part of | Roque de los Muchachos Observatory  |
|---|---|
| Location(s) | La Palma, Atlantic Ocean, international waters |
| Coordinates | 28°45′35″N 17°52′53″W / 28.759642°N 17.881322°W |
| Altitude | 2,350 m (7,710 ft) |
| Telescope style | optical telescope reflecting telescope solar telescope |
| Diameter | 0.45 m (1 ft 6 in) |
| Angular resolution | 0.2 arcsecond |
| Collecting area | 0.15 m2 (1.6 sq ft) |
| Focal length | 2 m (6 ft 7 in) |
| Mounting | equatorial mount |
| Enclosure | canopy |
| Website | www |
  Location of Dutch Open Telescope | |
 Related media on Commons | |
The Dutch Open Telescope (DOT) is an optical solar telescope located on Roque de los Muchachos Observatory, La Palma (near the Swedish 1-m Solar Telescope). With a main mirror of 45 centimeters, it can reach an 0.2 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 Venus transit.[1]
The open design was a departure from vacuum-style solar telescopes, and helped pave the way for bigger solar telescopes.[2]
- ^ R.J. Rutte. "DOT and the 2004 Venus transit". robrutten.nl. Retrieved 9 June 2024.
- ^ R.J. Rutte; R.H. Hammerschlag; F.C.M. Betonville (1999). "The Dutch Open Telescope 1999ASPC..158...57R Page 57". adsabs.harvard.edu. Retrieved 9 June 2024.