Gemini North welcomes poor weather proposals . Note that reliable guiding with the peripheral wave-front sensor (P2) at the optimum frequency requires a star brighter than R~13.5 in clear, dark skies, so in cloudy conditions we can observe only programs with R<11.5 guide-stars. For the GMOS OIWFS the same limit applies. For GMOS-N, only imaging or R400 and B600 spectroscopic programs will be considered.
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