Traditional dome flat fielding methods typically have difficulties
providing spatially uniform illumination and adequate flux over a
telescopic instrument's entire spectral range. Traditional flat fielding
screens, with an illumination source at least the size of the primary,
can be difficult or impractical to mount and uniformly illuminate. The
Las Cumbres Observatory Global Telescope Network (LCOGTN) will consist
of approximately 50 robotic telescopes of 0.4 m, 1.0 m, and 2.0 m
apertures with instrument bandwidth ranging from 350 - 1800 nm. The
Proc. SPIE, Vol. 7014, 701420 (2008)