The Herschel ESA spacecraft was launched at low temperature to reduce cooling fluid consumption in orbit. Therefore, focal instruments had to be vibrated at low temperature similar to the temperature encountered during the launch phase.

A temperature of 20 K on the specimen had to be achieved before starting the test.

The facility is made of a vacuum vessel with a flat bottom part attached firmly to the ground of the clean room.
The vessel itself surrounds the vibration table of the shaker.
Six feet go through the bottom plate of the vessel and the tightness is done by bellows that connect the moving part that is the vibration interface to the static part which is the vessel. These bellows allow the relative movement of those parts.
Inside the vessel, around the vibration interface welded box, is installed a thermal tent whose aim is to obtain the given temperature on the specimen. It is made of a double wall shrouds fed with Liquid Nitrogen and Helium.
The whole equipment is designed to be compatible for both the transversal vibration tests and the vertical test.


 ON FOCUS - Diamond Turning

Advanced Mechanical and Optical Systems (AMOS) manufactures small optical pieces by diamond turning mainly for infrared applications but also, after post polishing, for visible or ultraviolet. Concave or convex mirrors up to 500mm can be machined with extreme asphericities....


AMOS and Airbus Defence and Space deepen their collaboration in the frame of the METimage mission


Giant Magellan Telescope

 AMOS selected as major subcontractor to design the structure of the Giant Magellan Telescope.


Giant Bubbles on Red Giant Star

Telescopes built by AMOS allow for the first time astronomers to see huge bubbles on the surface of a remote star!  In an article published in the journal Nature on 21 December 2017, a team of...