NGS2

NGS2 is the Next Generation Natural Guide Star Wavefront Sensor for the Gemini GeMS system. It uses a fast Electron-Multiplied CCD as the focal plane sensor (for more information, see https://bit.ly/3aU4wuk), offers up to 3 guide windows, and can run up to 800Hz. It has been in operation at the Gemini observatory since early 2019.