The Gravity is an instrument that allows you to obtain close images of black holes. It is installed in the Very Large Telescope (VLT) of the European Southern Observatory (ESO), in Chile. From its first observations, Gravity successfully combined the starlight using the four VLT Auxiliary Telescopes.
The Gravity was built by a team of European astronomers and engineers, led by the Max Planck Institute for Extraterrestrial Physics. It is one of the most powerful instruments that has been installed in the VLT Interferometer.
The Gravity instrument manages to combine the light of several telescopes to form a single virtual telescope up to 200 meters wide. For this it uses a technique called Interferometry. This process makes it easier for astronomers to detect much more precise details in the images of astronomical objects than those provided by a single telescope.
To measure the position of astronomical objects, Gravity employs scales of great accuracy. It also performs spectroscopy and generates interferometric images. As an example, Gravity could observe objects the size of a building on the surface of the Moon. His images are of very high resolution, and have various applications, but his main function in the immediate future will be the study of the environment surrounding black holes.
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