Meet the team commissioning 4MOST!

Over the next two months, they’ll observe thousands of targets to study how the instrument performs and ensure it meets expectations ahead of full science operations.

#4MOST #astronomy #astrophysics #telescope #observatory

4MOST in motion!

Mounted on ESO’s VISTA telescope in Chile, this wide-field, fibre-fed spectroscopic facility can observe over 2000 targets at once, capturing their light and splitting it into spectra for analysis.

Video: AIP/A. Saviauk
Audio: LofCosmos

#4MOST #astronomy #astrophysics

First Light for 4MOST!

The 4-metre Multi-Object Spectroscopic Telescope (4MOST) has captured its very first spectra!

Video Credit: AIP/R. de Jong, AIP/K. Riebe, AIP/A. Saviauk, CRAL/J.-K. Krogager

Sneak peek time! 👀

Each dot in this image is a target star or galaxy that will be captured in our First Light! Soon, each of these dots will turn into spectra, revealing the chemical signature of each of these objects!

Image Credit: R. de Jong

#4MOST #astronomy #telescope #observatory #science

✨Tracing the growth of galaxies✨ From galaxy bulges to cosmic filaments, WAVES will map 1.6 million galaxies to reveal how structure, mass, and energy assemble across the universe!

📷: A. Saviauk/AIP

#WorldSpaceWeek #4MOST #extragalactic #telescope #astronomy #astrophysics #science #observatory

Bandi, Rocher, Verdier, Loveday, Chen, Richard, Kneib, Shanks, Brown: 4MOST Cosmology Redshift Survey (CRS): Clustering properties of CRS BG and LRG target catalogues https://arxiv.org/abs/2510.02449 https://arxiv.org/pdf/2510.02449 https://arxiv.org/html/2510.02449

✨Galaxy Clusters in Detail✨ The Galaxy Clusters Survey will study 40,000 galaxy clusters, from nearby groups to distant giants!

📷: A. Saviauk/AIP

#WorldSpaceWeek #4MOST #extragalactic #telescope #astronomy #astrophysics #science #observatory

Our latest paper,
more coming soon 😎

Verdier, Rocher, Bandi, Richard, Roukema, Loveday, Tempel, Bilicki, Kneib, Guitton: The 4MOST-Cosmology Redshift Survey: Target Selection of Bright Galaxies and Luminous Red Galaxies https://arxiv.org/abs/2508.07311 https://arxiv.org/pdf/2508.07311 https://arxiv.org/html/2508.07311

In Persian language, there is a slang term used to describe an opportunist who can turn nothing into something valuable - we say that person can 'make butter from shit'.
This individual is resourceful and can create products or opportunities out of seemingly impossible situations.
And here we are.