Gemini North Observatory on Mauna Kea
![](/images/recherche//tiles/3f287469-3440-4af1-834e-407b8e15451c.jpg)
2022-02-02 - When a guide star is not available near a celestial target, some ground-based telescopes can create artificial guide stars using lasers. The Gemini North Observatory on Mauna Kea points its Adaptive Optics Laser Guide Star into the night sky. (Credit: Stéphane Courteau/Queen's University)
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