The Diamond Planet

Astronomers have found a diamond half the size of Jupiter. Like most planets outside our solar system, nobody’s seen it. In this case, the astronomers were looking at its parent star (a pulsar) and found that the star was being pulled slightly backwards and forwards by the mass of a planet, something as heavy as Jupiter and orbiting very close to the star indeed – just 600,000 kilometres, or 1.5…

August 31, 2011
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The William Herschel Telescope

The William Herschel Telescope at sunset, Roque de los Muchachos observatory
August 27, 2011

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 been used for about 1,500 scientific…

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Events on La Palma this weekend

Friday night is the best meteor shower of the year, the Perseids. Of course it should be visible all over the planet, but La Palma’s astronomical viewpoints will probably be a particularly good place to see shooting stars. Unfotunately the full moon will spoil the show quite a bit. Astrotour will be in La Polvacera bsketball court from 9 pm – 11:30 pm with telescopes. This year, the island’s annual…

August 12, 2011
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Shooting Stars Tonight

Perseid meteor
August 12, 2011

Tonight is the biggest meteor shower of the year, the Perseids. In Spanish, they’re called the tears of St Lawrence, because St Lawrence’s day is the 10th. Astrotour will be at La Polvacera basketball court. From 8 – 9 pm they’ll hold workshops and from 9pm to 11:30, observation with telescopes. If there’s low cloud, you’ll get a better view up at one of the astronomical viewpoints. Enjoy!

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The Swedish Solar Telescope

The Swedish Solar Tower, Roque de Los Muchachos observatory
July 26, 2011

Two of the fourteen telescopes at the Roque de los Muchachos observatory are solar telescopes — highly specialised to observe our own sun. This is the Swedish Solar Telescope, which was one of the first telescopes built on the Roque. It’s currently the best solar telescope in the world since they added the new adaptive optics in 2005. (Adaptive optics compensate for air turbulence.) It can resolve details of the…

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