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ESO 33/07 - Associated Images

2 August 2007
For Immediate Release

The Planet, the Galaxy and the Laser

Inspiring Images from Paranal

Image of the night sky above Paranal on 21 July 2007, taken by ESO astronomer Yuri Beletsky. A wide band of stars and dust clouds, spanning more than 100 degrees on the sky, is seen. This is the Milky Way, the Galaxy we belong to. At the centre of the image, two bright objects are visible. The brightest is the planet Jupiter, while the other is the star Antares. Three of the four 8.2-m telescopes forming ESO's VLT are seen, with a laser beaming out from Yepun, Unit Telescope number 4. The laser points directly at the Galactic Centre. Also visible are three of the 1.8-m Auxiliary Telescopes used for interferometry. They show small light beams which are diodes located on the domes. The exposure time is 5 minutes and because the tracking was made on the stars, the telescopes are slightly blurred.

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The sky above Paranal on 21 July 2007. Two 8.2-m telescopes of ESO's VLT are seen against the wonderful backdrop of the myriad of stars and dust that makes the Milky Way. Just above Yepun, Unit Telescope number 4, the Small Magellanic Cloud - a satellite galaxy of the Milky Way - is shining. A laser beam is coming out of Yepun, aiming at the Galactic Centre. It is used to obtain images that are free from the blurring effect of the atmosphere. On this image, the laser beam looks slightly artificial. This is a side effect due to saturation caused by the long exposure time. Planet Jupiter is seen as the brightest object on the upper right, next to the star Antares. Image taken by ESO astronomer Yuri Beletsky.