I like that idea. Having three V-band measurements would be nice and to be able to say you have simultaneous B-V, V-R, and V-I would be pretty cool. Michael On May 15, 2004, at 11:01 AM, Thomas Droege wrote: > I could also make one camera a V, B camera and the other a V, R camera. > This would then match all the photometry against a V image for > standardization.