![A view of the Mayall Telescope (tallest telescope at right) at Kitt Peak National Observatory near Tucson, Arizona. (Credit: Marilyn Chung/Berkeley Lab) A view of the Mayall Telescope (tallest telescope at right) at Kitt Peak National Observatory near Tucson, Arizona. (Credit: Marilyn Chung/Berkeley Lab)](/sites/default/files/styles/crop_square_2_2_to_320px/public/images/news/A%20view%20of%20the%20Mayall%20Telescope.jpg?h=a52854ec&itok=Tp9g3CVS)
The new instrument, the result of an international collaboration of almost a hundred institutions, including the Instituto de Astrofísica de Canarias, has made its first trial observation. Designed to explore the mystery of dark energy, its installation is about to be completed at the Mayall telescope of the Kitt Peak Observatory in Arizona (United States).
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