The MICADO first light imager for the ELT: final design of primary instrument support, access and supply subsystems

Johann Witschel; Harald E. Nicklas; H. Anwand-Heerwart; J.-O. Dette; Amon Richter

doi:10.1117/12.2630013

29 August 2022 The MICADO first light imager for the ELT: final design of primary instrument support, access and supply subsystems

Johann Witschel, Harald E. Nicklas, H. Anwand-Heerwart, J.-O. Dette, Amon Richter

Author Affiliations +

Proceedings Volume 12184, Ground-based and Airborne Instrumentation for Astronomy IX; 121843F (2022) https://doi.org/10.1117/12.2630013
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

MICADO is one of the first-light imaging instruments of the ELT and will provide superb imaging capabilities through two AO systems to the community. Being designed to work with the MCAO system MAORY, its additional ability to operate in a stand-alone mode without MAORY includes an additional SCAO wavefront sensing system. Therefore, the instrument support structure has to fulfil two purposes, the positioning of the camera in its stand-alone mode and when it will be mounted downstream of the MCAO facility MAORY. The main instrument structure is addressed here in its basic functions such as passive positioning of the instrument in the two observing modes and linking all its subsystems together. FEA results will be given as well as other performance assessments and design trade-offs. The secondary subsystem, the rotating platform is presented in its two main functions; this platform carries six cabinets containing the instrument’s electric supply, electronic control and data links as well as the supply with coolant liquids and with LN2. It drives additionally the surrounding cable wrap that contains all the supply lines to compensate the instrument’s rotation in a gravity-invariant orientation. Finally, a permanent two-story scaffold provides convenient access to the MICADO instrument in both observing modes, in stand-alone SCAO mode (full 360° access) and in MCAO mode slightly reduced including access to MAORY’s down folding M12 mirror.

Citation Download Citation

Johann Witschel, Harald E. Nicklas, H. Anwand-Heerwart, J.-O. Dette, and Amon Richter "The MICADO first light imager for the ELT: final design of primary instrument support, access and supply subsystems", Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 121843F (29 August 2022); https://doi.org/10.1117/12.2630013

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available