  Onium-onium scattering at high energy is used to illustrate a dipole picture
of high energy hard scattering in the large $N_c$ limit. Single and double BFKL
pomeron exchanges are calculated in the leading logarithmic approximation. An
expression is given for the triple pomeron coupling when one of the pomeron's
momentum is zero while the other two have momentum transfer, t. This expression
is explicit and could be evaluated numerically. It has a $(-t)^{-{1\over 2}}$
singularity at t=0.
