![Site testing at Pampa de Pajonales](https://cdn.eso.org/images/thumb300y/eso_sn118.jpg)
Site testing at Pampa de Pajonales
![Weitfeldaufnahme der Himmelsregion um den planetarischen Nebel Fleming 1](https://cdn.eso.org/images/thumb300y/eso1244c.jpg)
Weitfeldaufnahme der Himmelsregion um den planetarischen Nebel Fleming 1
![Der Kugelsternhaufen Messier 4 im Kontext](https://cdn.eso.org/images/thumb300y/eso1235c.jpg)
Der Kugelsternhaufen Messier 4 im Kontext
![Working on the ALMA antennas](https://cdn.eso.org/images/thumb300y/alma-osf-hh2540-cc.jpg)
Working on the ALMA antennas
![Wide-field view of the sky around NGC 253](https://cdn.eso.org/images/thumb300y/eso1152c.jpg)
Wide-field view of the sky around NGC 253
![The GRAAL main assembly (detail)](https://cdn.eso.org/images/thumb300y/graal1038.jpg)
The GRAAL main assembly (detail)
![ALMA antennas at the OSF](https://cdn.eso.org/images/thumb300y/alma-jfs-2010-13.jpg)
ALMA antennas at the OSF
![An Auxiliary Telescope waiting for sunset](https://cdn.eso.org/images/thumb300y/vlt-site-sunset-2010.jpg)
An Auxiliary Telescope waiting for sunset
![Atoms-for-Peace: a galactic collision in action*](https://cdn.eso.org/images/thumb300y/eso1044a.jpg)
Atoms-for-Peace: a galactic collision in action*
![The galaxy cluster MACS J2135-010217 lensing SMM J2135-0102](https://cdn.eso.org/images/thumb300y/eso1012e.jpg)
The galaxy cluster MACS J2135-010217 lensing SMM J2135-0102
![NGC 300 X-1 in the spiral galaxy NGC 300](https://cdn.eso.org/images/thumb300y/eso1004c.jpg)
NGC 300 X-1 in the spiral galaxy NGC 300
![Starry night at ALMA](https://cdn.eso.org/images/thumb300y/starry-night-at-alma.jpg)
Starry night at ALMA