I see. Thanks for the info.
On Feb 7, 2010, at 1:42 PM, pch wrote: > Nice job, congratulation. > > About UCAC3, the catalog measurement where done in a single color, this is > originally an astrometric catalog. > The color information are merged afterward using other source of information > for the published catalog. > The data I keep for use with cartes du ciel are R and B from Supercosmos > which > come from Schmidt plate photograph. But as the globular cluster center are > burned in this images there is no color information for this stars. You can > observe the same near the bright stars. > > Patrick > > > ------------------------------------ > > Yahoo! Groups Links > > > Robert J. Vanderbei Princeton University http://www.princeton.edu/~rvdb "With a name like Smucker's, it has to be good" -- L. Wyse [Non-text portions of this message have been removed]
