The William Herschel Telescope

The William Herschel Telescope at sunset. . The William Herschel Telescope was for many years the biggest and best optical telescope in Europe (until GranTeCan opened in 2009).  The main mirror is 4.2 m across (165″, or 13′ 9″) which astronomers call “a good light bucket”. It’s rather old as world-class telescopes go, since it opened in 1987, but it still produced excellent science. In fact data from the WHT…

August 7, 2013
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The William Herschel Telescope

The William Herschel Telescope at sunset. The William Herschel Telescope was for many years the biggest and best optical telescope in Europe (until GranTeCan opened in 2009).  The main mirror is 4.2 m across (165″, or 13′ 9″) which astronomers call “a good light bucket”. It’s rather old as world-class telescopes go, since it opened in 1987, but it still produced excellent science. In fact data from the WHT has…

August 27, 2011
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Asteroid strike

A small asteroid, some 3 metres in diameter, came screaming in at 12 km /s (27,000 mph) and exploded over northern Sudan at 2:45 am on Tuesday October 7th. They don’t think any of the bits would have been big enough to hit the ground. This is the first time an asteroid has been spotted and tracked before impact. And the reason it’s on this blog is that the William…

October 8, 2008
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