Green and blue
Sitting amongst the alien landscape of the harsh Atacama, the antennas of the Large Millimeter/submillimeter Array (ALMA) look eerily otherworldly in this ESO Picture of the Week as they are bathed in a neon green light. This light is actually an in-built function of ALMA, not evidence of alien activity! The array’s antennas have a flashing green light that blinks periodically whilst the antennas are in operation, and does not disturb the radio-wavelength observations. This light is not usually quite so visible — this picture was captured using a 10-second exposure, during which time a green flash occurred and spread throughout the image, creating a stark contrast between the neon green of the antennas and the deep blue of the night sky.
ESO/S. Fandango
Om bilden
ID: | potw1719 |
Typ: | Foto |
Publiceringsdatum: | 8 maj 2017 06:00 |
Storlek: | 3840 x 5760 px |
Om objektet
Namn: | Atacama Large Millimeter/submillimeter Array |
Typ: | Unspecified : Technology : Observatory : Telescope |
Kategori: | ALMA |