  We report the results of inelastic neutron scattering investigation on the
model antiferromagnet CoF$_2$ by time-of-flight neutron spectroscopy. We
measured the details of the scattering function $S(Q,\omega)$ as a function of
temperature with two different incident neutron wavelengths. The temperature
and Q dependence of the measured scattering function suggests the presence of
magnon-phonon coupling in almost all branches. The present results are in
agreement with the strong magnetoelastic effects observed previously.
