diameter = 1.8-m
f/ratio (prime) = f/2.3
f/ratio (fibre injection) = f/3.3
prime focus detector = mosaic of 4 x H4RG-10 HgCdTe arrays with 10 micron pixels (flight spares from the WFIRST mission)
microlensing detection in the Galactic bulge (50% time) to search for exoplanets
exoplanet transits
Galactic structure
variable stars
transients(with ToO override capability)