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Active optics for high-dynamic variable curvature mirrors
Emmanuel Hugot, Marc Ferrari, Gerard R. Lemaitre +5
Variable curvature mirrors of large amplitude are designed by using finite element analysis. The specific case studied reaches at least a 800 μm sag with an optical quality better…
Design and development of a freeform active mirror for an astronomy application
Zalpha Challita, Tibor Agócs, Emmanuel Hugot +10
The advent of extremely large telescopes will bring unprecedented light-collecting power and spatial resolution, but it will also lead to a significant increase in the size and com…
High-contrast imager for Complex Aperture Telescopes (HiCAT): 2. Design overview and first light results
Mamadou N'Diaye, Elodie Choquet, Sylvain Egron +13
We present a new high-contrast imaging testbed designed to provide complete solutions in wavefront sensing, control and starlight suppression with complex aperture telescopes. The…