Cambridge Optical Aperture Synthesis Telescope
Coordinates: 52 ° 9 ′ 50.3 ″ N , 0 ° 2 ′ 26 ″ E
The Cambridge Optical Aperture Synthesis Telescope (COAST) is an astronomical interferometer at the Mullard Radio Astronomy Observatory in Cambridgeshire , England . It consists of five Cassegrain telescopes , each with a mirror diameter of 40 cm, which can be aligned using siderostats and which, separated by a base length of up to 100 m, can achieve angular resolutions of up to 0.001 arc seconds . With COAST it was possible for the first time to take high-resolution images of star surfaces.
Web links
- COAST website (English)
- Some high resolution images of Betelgeuse , taken with COAST and the William Herschel Telescope in November 1997