4MOST is a new wide-field high-multiplex spectroscopic survey facility under development for the ESO/VISTA telescope. It has a broad range of science goals ranging from galactic archaeology and stellar physics to the high-energy physics, galaxy evolution, and cosmology. Starting in 2024, 4MOST will deploy 2436 fibres in a 4.1 square degree field-of-view. The fibres will be fed to 3 spectrographs: 2 low resolution spectrographs (LRS) covering the wavelength range from 3700 to 9500Å at a spectral resolution of 5000–8000; and 1 high resolution spectrograph (HRS) covering three smaller wavelength ranges at a spectral resolution of around 20,000. Over a 5-year period, 4MOST will simultaneously carry out a large number of public surveys that will be observed in parallel. The full list of surveys and their scientific interests are available at the 4MOST website.
For further information about the 4MOST instrument and the consortium, see the 4MOST website.
