  The University of Hawaii Wide-Field Imager (UHWFI) is a focal compressor
system designed to project the full half-degree field of the UH 2.2 m telescope
onto the refurbished UH 8Kx8K CCD camera. The optics use Ohara glasses and are
mounted in an oil-filled cell to minimize light losses and ghost images from
the large number of internal lens surfaces. The UHWFI is equipped with a
six-position filter wheel and a rotating sector blade shutter,both driven by
stepper motors. The instrument saw first light in 2004 in an engineering mode.
After filling the lens cell with index matching oil, integration of all
software components into the user interface, tuning of the CCD performance, and
the purchase of the final filter set, UHWFI is now fully commissioned at the UH
2.2 m telescope.
