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Published on Sunday, 08 October 2017 15:39

OBU.MUSEThe four-laser guide star at the VLT. (ESO/R Bacon)

The view from inside one of the European Southern Observatory’s Very Large Telescopes at Paranal, Chile, where MUSE, the Multi Unit Spectroscopic Explorer, is now working with a four-laser adaptive optics system to obtain sharper images. The Adaptive Optics Facility comprises a laser guide star, a very thin deformable mirror and multiple wavefront sensors (GALACSI) to compensate for atmospheric disturbances. The instrument combines a wavelength range from 365–930 nm and high spectral resolution (1700 in the blue, 3400 in the red) with seeing-limited spatial resolution and 0.2 arcsecond pixels over a field of view 1 arcminute square. MUSE was designed to study the formation of stars and galaxies in the early universe, and for gravitational microlensing studies to determine the distribution of dark matter.

This image is published in the October 2017 issue of Astronomy & Geophysics.


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