300mm Pentax lens shot/ST-X10ME combination.
4hr L, 1 hr R, 1 hr G, 1 hr B exposures.
Visually the constellation Chamaeleon is quite barren but the region including some neighbouring constellations is covered by this enormous complex.
Full resolution here.
http://members.iinet.net.au/~sjastro/Cham_complex.jpg
Clear skies
Steven