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Idea 9: Creating a MOSFIRE spectral library of the ultracool Y-dwarfs (Teff>400K). Y-dwarfs share temperatures with giant extrasolar planets. These objects are extremely faint for most of the spectrographs currently available (up to J~22-23), but could be done with MOSFIRE integrating a couple of hours. There are available around 10 objects for this project.
Idea 10: PyWFS and SH switch back and forth on sky (copied from comment)
Idea 11: NGS-AO performances and stability using 1.0 plate scale for KI and KII (copied from comment)