ViLLaGEs: Opto-Mechanical Design of an on-sky visible-light MEMS-based AO system

作者: Bryant Grigsby , Chris Lockwood , Brian Baumann , Don Gavel , Jess Johnson

DOI: 10.1117/12.790166

关键词: Visible radiationDiffractionSkyTelescopeOpticsLaserAdaptive opticsElectrical engineeringGuide starPoint spread functionVisible spectrumInfraredComputer scienceFocus (optics)Observatory

摘要: Visible Light Laser Guidestar Experiments (ViLLaGEs) is a new Micro-Electro Mechanical Systems (MEMS) based visible-wavelength adaptive optics (AO) testbed on the Nickel 1-meter telescope at Lick Observatory. Closed loop Natural Guide Star (NGS) experiments were successfully carried out during engineering fall of 2007. This major evolutionary step, signaling movement AO technologies into visible light with MEMS mirror. With on-sky Strehls in I-band greater than 20% second tests, science possibilities have become evident. Described here advanced used design and construction ViLLaGEs system, comparing it to LickAO infrared discussion dome infrastructural improvements necessary for this system. A significant portion revolves around sizable effort that went towards eliminating flexure. Then, we detail upgrades make facility class instrument. These will focus Nyquist sampling diffraction limited point spread function open operations, motorization automation technician level alignments, adding dithering capabilities changes near science.

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