Now, the more obscure things...
Coma Galaxy cluster. We put a wide field prime focus camera on the 24 inch telescope which gave us a 1 degree field of view, so I could do big fields like this.
Virsgo Galaxy Cluster
Cassiopeia A supernova remnant (we were searching for the progenitor neutron star)
FY Aquila (Variable star, was thought at one time to be the progenitor star for a famous gamma ray burst in 1979). Turned out to be a Mira type star (it has a small localized nebula around it)
Abell 39, a very faint planetary nebula, one of the most perfect spheres ever seen in space:
Wolf-Rayet 124