Space instrumentation - MIRIM optics

Space instrumentation - MIRIM optics

Space instrumentation

MIRIM optics

As part of the MIRI instrument to be integrated in the focal plane of the James Webb space telescope, AMOS has been responsible for manufacturing the MIRI imager mirrors for CSL and the CEA. The MIRI imager comprises 5 mirrors and among them , 3 are associated in a TMA configuration.
Those mirrors for the mid-infrared range were manufactured in aluminium alloy by single-point diamond turning.

  • Mirror dia 75 radius 250: form: 11 nm RMS, Ra: < 2 nm
  • Demonstration Model (DM) - M1 mirror

Miri – M5
On board off-axis aspherical mirror in uncoated Aluminium on James Webb Space Telescope

  • Diamond Turning
  • Roughness: 5nm RMS
  • SFE: 60 nm RMS

Miri – CM1

  • Aluminium Off Axis Elliptic Mirror
  • Single Point Diamond Turning
  • Roughness: < 5nm RMS
  • SFE: 50 nm RMS
  • Useful aperture: Ø 18 nm

Miri – Fold 2

  • Flat Mirror
  • Roughness: 3nm RMS
  • SFE: 25 nm RMS


 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...