Image Quality (Mauna Kea):

-Percentage of Photometric Conditions: 62% of usable time

-Median Site Seeing: 0.43 arcsec FWHM* at 0.55 microns (Optical/Visual radiation)

-20% Percentile Site Seeing: 0.28 arcsec FWHM* at 0.55 microns

-Predicted Image Quality with Adaptive Optics: <0.07 arcsec FWHM* over a

1 arcminute diameter field at 2.2 microns (near infrared).

*FWHM "Full Width Half Max" is the angular diameter of a star image at 50% of the maximum brightness (intensity).