Coffee helps me appreciate the wonders of the universe, and the wonders of the universe help me appreciate my coffee.
Articles tagged with "paranal"
A half hour exposure reveals a string of stationary lights over Paranal, strung out roughly along the celestial equator. They are all geostationary satellites, orbiting at an altitude of 36,000 km where it takes exactly 24 hours to orbit the Earth.
The Next Generation Transit Survey is being commissioned at Paranal. It will consists of 12 small telescopes, all operating remotely to search for planets around other stars. I went over there to take some photos as they were preparing for their official first light.
It’s very dark at Paranal but there’s still background light that we can’t do anything about: the atmosphere itself glows at night. It can be surprisingly bright. Often it’s green, when oxygen atoms are glowing. It can be red, too, when nitrogen is responsible. And it can be orange, when sodium atoms are being excited. Tonight, it was extremely orange, looking a lot like streetlights on clouds, except there were no clouds, and there are definitely no streetlights near here. It got really strong while I was taking a time lapse and you can see huge waves in the upper atmosphere rippling.
The Milky Way is at the right, and the Milky Way’s two satellite galaxies, the Magellanic Clouds, are in the middle of this photograph. There was a lot of airglow to the south west, and just to the right of the Large Magellanic Cloud you can see the distant glow from the town of Taltal.