Unspecified Ruihan Zhang Profile

Ruihan Zhang

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Publications (3)

Proceedings Article | 30 August 2022 Poster + Paper

Progress on the University of Hawaii 2.2-meter adaptive secondary mirror

Mark Chun, Alan Ryan, Ruihan Zhang, Stefan Kuiper, Gilles Ackaert, Christoph Baranec, M. J. Baeten, Arjo Bos, Rachel Bowens-Rubin, Bert Dekker, Ryan Dungee, Taavishe Gupta, Phil Hinz, Wouter Jonker, Fred Kamphues, Olivier Lai, Jessica Lu, Matt Maniscalco, Bert Monna, Manav Nair, Jan Nijenhuis, Hans Priem, Paul-Alexander Vogel

Proceedings Volume 12185, 121857U (2022) https://doi.org/10.1117/12.2629046

KEYWORDS: Mirrors, Telescopes, Adaptive optics, Wavefront sensors, Actuators, Deflectometry

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Proceedings Article | 30 August 2022 Poster + Paper

In-lab calibration and testing of adaptive secondary mirrors using phase measuring deflectometry

Ruihan Zhang, Mark Chun

Proceedings Volume 12185, 1218569 (2022) https://doi.org/10.1117/12.2627278

KEYWORDS: Mirrors, Cameras, Deflectometry, Actuators, Prototyping, Wavefronts, Fringe analysis, Calibration, Telescopes, Adaptive optics

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Proceedings Article | 13 December 2020 Presentation + Paper

A new adaptive secondary mirror for astronomy on the University of Hawaii 2.2-meter telescope

Mark Chun, Christoph Baranec, Olivier Lai, Jessica Lu, Ruihan Zhang, Stefan Kuiper, Wouter Jonker, Matthew Maniscalco

Proceedings Volume 11448, 114481E (2020) https://doi.org/10.1117/12.2562847

KEYWORDS: Astronomical telescopes, Telescopes, Astronomy, Actuators, Mirrors, Thermography, Adaptive optics, Control systems, Calibration, Visible radiation

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