Development of a monolithic flexure based tip/tilt cryo-mechanism to stabilize the pupil of METIS (Conference Presentation)

Daan Zaalberg; Mirka Maresca; Ivan Lloro; Jeff Lynn; Niels Tromp; Dennis Dolkens; Marijn Versteeg; Menno Schuil; Elfi Dijkstra; Gerard van Egmond; Menno de Haan; Eddy Elswijk

doi:10.1117/12.3020475

26 August 2024 Development of a monolithic flexure based tip/tilt cryo-mechanism to stabilize the pupil of METIS (Conference Presentation)

Daan Zaalberg, Mirka Maresca, Ivan Lloro, Jeff Lynn, Niels Tromp, Dennis Dolkens, Marijn Versteeg, Menno Schuil, Elfi Dijkstra, Gerard van Egmond, Menno de Haan, Eddy Elswijk

Author Affiliations +

Proceedings Volume 13100, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VI; 1310031 (2024) https://doi.org/10.1117/12.3020475
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

The Mid-infrared ELT Imager and Spectrograph (METIS) is one of the scientific instruments for the ELT. The Common Fore Optics (CFO) is the first set of optics and mechanisms within the cryogenic instrument. A key element of the CFO is the Pupil Stabilization Mechanism (PSM), a tip/tilt mirror used for periodic adjustments of the pupil alignment during observations. The design challenges for the PSM involved achieving the required stability, resolution, and a sufficient stroke range/hold power while operating within the stringent requirements of the CFO. The design development lead to a monolithic design and integrated flexures driven by actuators with an integrated closed loop optical encoder.

Conference Presentation

Citation Download Citation

Daan Zaalberg, Mirka Maresca, Ivan Lloro, Jeff Lynn, Niels Tromp, Dennis Dolkens, Marijn Versteeg, Menno Schuil, Elfi Dijkstra, Gerard van Egmond, Menno de Haan, and Eddy Elswijk "Development of a monolithic flexure based tip/tilt cryo-mechanism to stabilize the pupil of METIS (Conference Presentation)", Proc. SPIE 13100, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VI, 1310031 (26 August 2024); https://doi.org/10.1117/12.3020475

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