Stars Trails over Armazones
Multiple-exposure picture taken looking west from the top of the 3060-metre-high Cerro Armazones, the selected site for the European Extremely Large Telescope (E-ELT). Because of the rotation of the Earth, the night sky is seen as it rotates around the southern celestial pole. As a result of this movement, the stars describe dotted trails when a series of exposures is combined. The closer we look to the celestial equator — here seen near the left edge of the picture — the straighter the trails appear. On the right of the image is the Differential Image Motion Monitor (DIMM), used to measure the atmospheric seeing.
Credit:
F. Char/ESO
About the Image
| Id: | armazones_20110122 |
| Type: | Photographic |
| Release date: | 6 July 2011, 10:52 |
| Size: | 3072 x 2304 px |
About the Object
| Name: | Cerro Armazones |
| Type: | • Milky Way : Sky Phenomenon : Night Sky : Trail • Unspecified : Technology : Observatory • X - E-ELT |
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