Astrofest

La Palma holds a festival of astronomy, Astrofest, with activities for all ages and knowledge levels. One of the highlights is “The big turn off” (El apagón) where town halls turn off the street lights for an hour so that the stars are visible. The Island Council provides amateur telescopes and starlight guides to each municipality. I used to really enjoy being one of the starlight guides. The closing ceremony for…

December 11, 2024
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Watching the Super Lunar Eclipse

The lunar eclipse of 28/09/2015 from La Palma. Credit: Sheila Crosby
September 29, 2015

Well, I saw it! It was cloudy at low altitudes, so I was glad I’d joined the bus going up to Pico de La Cruz with a group of about 16 people from Astrofest. Since buses get a lot more expensive after midnight, the organiser was persuaded to have the bus drop us off shortly after 11 pm, so it would be “home” by midnight, even though it meant a…

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Happy 30th birthday to the Observatory

Looking at the surface of the sun inside the giant kaleidoscope, IAC exhibition, Santa Cruz de La Palma
September 20, 2015

  Happy 30th birthday to the Observatory at the Roque de Los Muchachos! The official inauguration was in 1985, attended by the royalty from Denmark, Holland, Spain, Sweden and the United Kingdom, and heads of state of Germany and Ireland. At that time there were only six telescopes on La Palma; now there are 17 of them. To celebrate, the Canarian Astrophysics Institute has a free exhibition in Santa Cruz…

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The science of eclipses

The Moon blood red because it's completely inside the Earth's shadow.
September 13, 2015

In the early hours of September 28th there will be a particularly spectacular lunar eclipse when the moon will be 10% closer to the Earth and larger than usual – a super moon, in fact. A lunar eclipse happens when the Sun, Earth and Moon are in a straight line, so that the moon passes through the Earth’s shadow. If you were standing on the moon when this happened, you’d…

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How to photograph meteors, including the Perseids on August 14th

A Geminid meteor over the Caldera de Taburiente, captured by Christoph Marlin
August 9, 2015

The Perseid meteor shower is already here, and it will reach its peak on August 12th as the Earth passes through the dust left by comet. If you want to photograph shooting stars, use a wide angle lens with a large aperture, set the ISO to 800 or higher, and use a tripod. It’s no good chasing meteors around the sky – chose one spot and stick to it. It…

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