Lunch lecture March hosted by Astron
Title: From Concept to Cryogenic Validation: The METIS Derotator Journey
One of the key mechanisms of the Mid-infrared ELT Imager and Spectrograph (METIS) is its cryogenic K-shaped derotator, designed to maintain accurate sky and pupil alignment on the detector during observations. Operating at 67 K within a tightly constrained envelope, it must deliver slow, precise rotation while meeting stringent lateral stability and optical performance requirements for bundle diameters up to 140 mm. Over the past few years, NOVA has developed and tested this mechanism, addressing challenges in thermal stability, mirrors manufacturing, assembly, and alignment. This talk presents key design solutions and results from the cryogenic test campaign.
Spreker: Daan Zaalberg (Mechanical Engineer) & Mirka Maresca (FEM Specialist)
Company: Astron
Date: March 2 2026
Time: 12:02pm
Location: Teams
Please send an email to info@dspe.nl if you are interested in following this lecture.
Normally every first monday of the month DSPE organizes for their members a lunch lecture. Each time there is a different topic that a speaker is going to talk about. Due to the holiday period we will organize this lecture in the second week. Questions can be asked after the 25 minutes presentation. If you want to keep informed about these lunch lectures please send an email to info@dspe.nl