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Delivery of the coronagraphic masks for the ELT's METIS instrument
Jul 14, 2024
Delivery of the coronagraphic masks for the ELT's METIS instrument
METIS is a first-generation instrument for the ELT, the Extremely Large Telescope currently under construction in the Atacama Desert in Chile, which will see its first light in 2028. Irfu has been involved in this instrument since 2018. In 2021, 14 cryomechanisms that will drive a dozen optical systems on the METIS instrument were delivered. METIS comprises two separate units: one for spectroscopy, the other for imaging. The latter contains coronagraphs, based on phase masks.
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Jun 22, 2023
The CEA-IRFU develops a rare gem: the cryogenic derotator drive for the ELT's METIS instrument
Large ground-based telescopes with mirrors over 8 m in diameter1 use azimuthal mounts to point the stars. When tracking a star, the Earth's rotation causes the observed field on the astrophysics detector to rotate, creating "spun" images. To correct this effect, the instruments mounted on these telescopes use a "field derotator", a mechanism whose main function is to rotate a set of mirrors at very low speed and with very high precision.
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The CEA-IRFU develops a rare gem: the cryogenic derotator drive for the ELT's METIS instrument
ESO validates the design of the ICAR cryomechanisms for the METIS instrument on the ELT
Jun 01, 2021
ESO validates the design of the ICAR cryomechanisms for the METIS instrument on the ELT
The ICAR cryomechanisms that will equip the METIS instrument on the world's largest telescope, the ELT, by 2029 have just passed the final design review by an ESO expert committee.
Resulting from a product lineage initiated in 1997 for the developments linked to the VISIR project (VLT Imager and Spectrometer for mid Indra Red), the CEA's cryomechanisms named ICAR (Indexed Cryogenic Actuator for Rotation) will equip the METIS instrument on the largest telescope in the world: the Extremely Large Telescope (ELT) by 2029.
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Jun 04, 2020
ELT/METIS instrument formally entering final design phase
On May 18th 2020, ESO formally closed the preliminary design review of the ELT/METIS thermal infrared instrument. Following this important milestone, the instrument enters into the final design phase (phase C) in which the its design will be frozen just before its building.
ELT/METIS instrument formally entering final design phase

 

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