CHILE / LONDON (IT BOLTWISE) – The 4-meter Multi-Object Spectroscopy Telescope (4MOST) has successfully completed its first test observations. This groundbreaking instrument, installed at the VISTA telescope in Chile, will analyze light from over 25 million objects in the coming years to unlock the mysteries of the universe.
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The 4-meter multi-object spectroscopy telescope, known as 4MOST, recently successfully completed its first test observations. This state-of-the-art instrument is installed on the VISTA telescope in Chile and is considered the largest of its kind for exploring the southern sky. Over the next five years, 4MOST aims to capture and analyze light from over 25 million different objects to understand the history of our galaxy, explore the mysteries of dark matter and study star formation.
4MOST is designed to capture light from thousands of cosmic objects simultaneously. To do this, it uses over 2,400 thin optical fibers, each about as thick as a human hair. This light is then directed to three separate spectrographs, which split it into up to 18,000 color components. This technique allows astronomers to analyze the properties of the observed cosmic sources, including their chemical composition, speed or distance.
The introduction of 4MOST represents a fundamental change in the work of the European Southern Observatory (ESO). Normally, one instrument only observes the objectives of a single scientific study. However, thanks to the large number of fibers, 4MOST can observe sources from many different scientific projects at the same time. This significantly maximizes the scientific performance of the instrument.
The first observations with 4MOST covered an area of the sky containing the Sculptor Galaxy and the star cluster NGC 288. This demonstration of the instrument’s capabilities shows that it is capable of observing multiple targets with an astonishingly large field of view and numerous optical fibers. In the first run, 4MOST collected spectra from various stars in our Milky Way and from more than a thousand nearby and distant galaxies.
The 4MOST instrument is developed, built and scientifically operated by a consortium of 30 universities and research institutes in Europe and Australia. The main institutes involved in the construction and operation of the instrument are the Leibniz Institute for Astrophysics Potsdam (AIP), Macquarie University in Australia and the Center de Recherche Astrophysique de Lyon in France. This international collaboration underlines the importance and potential of 4MOST for astronomical research worldwide.
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