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arXiv · 2607.20244

Long-term performance of the MLR-TT sensor: two-photon polymerization validation in the telescope environment

Robert J. Harris·Philipp Hottinger·Jonathan Crass·Philipp-Immanuel Dietrich·Christian Koos
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Abstract

We report on the long-term optical performance of a two-photon polmerized microlens ring tip-tilt sensor. The study is backed by repeated measurements over the last six years, since the sensor was first tested in the sky at the Large Binocular Telescope. The goal of the study is to assess the feasibility of the underlying technology of two-photon polymerization for future instrumentation in the realistic environments experienced at astronomical telescopes.

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Robert J. Harris, Philipp Hottinger, Jonathan Crass, Philipp-Immanuel Dietrich, Christian Koos. 2026-07-22. Long-term performance of the MLR-TT sensor: two-photon polymerization validation in the telescope environment. https://arxiv.org/abs/2607.20244

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