Development of cryogenic mechanisms for the VLT/ERIS instrument

Adrian M. Glauser; Walter Bachmann; Polychronis Patapis; Mike MacIntosh; Ric Davies; Helmut Feuchtgruber; Stephen March; David Pearson; Sascha P. Quanz; Christian Rau; William D. Taylor; Hans Martin Schmid; Chris Waring

doi:10.1117/12.2313399

6 July 2018 Development of cryogenic mechanisms for the VLT/ERIS instrument

Adrian M. Glauser, Walter Bachmann, Polychronis Patapis, Mike MacIntosh, Ric Davies, Helmut Feuchtgruber, Stephen March, David Pearson, Sascha P. Quanz, Christian Rau, William D. Taylor, Hans Martin Schmid, Chris Waring

Author Affiliations +

Proceedings Volume 10702, Ground-based and Airborne Instrumentation for Astronomy VII; 1070230 (2018) https://doi.org/10.1117/12.2313399
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

We present the design and measured performance of the Aperture Wheel and the Pupil and Filter Wheel mechanisms for the NIX camera of the VLT/ERIS instrument. Both mechanisms were developed for high opto-mechanical precision and stability while operating at 70 K. We summarise the design constraints and considerations. Further, we have developed a dedicated cryo-test facility to allow measuring the position repeatability under nominal operational conditions. We demonstrate that the wheel mechanisms perform as designed and provide the measurement methodology and results of the opto-mechanical tolerances.

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Adrian M. Glauser, Walter Bachmann, Polychronis Patapis, Mike MacIntosh, Ric Davies, Helmut Feuchtgruber, Stephen March, David Pearson, Sascha P. Quanz, Christian Rau, William D. Taylor, Hans Martin Schmid, and Chris Waring "Development of cryogenic mechanisms for the VLT/ERIS instrument", Proc. SPIE 10702, Ground-based and Airborne Instrumentation for Astronomy VII, 1070230 (6 July 2018); https://doi.org/10.1117/12.2313399

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