Using the bit of code below adds the raster catalog footprint polygon layer.
mxd = arcpy.mapping.MapDocument("Current")
df = arcpy.mapping.ListDataFrames(mxd, "*")[0]
addOrtho2011 = arcpy.mapping.Layer(r"P:\Mapping\Data\Orthos.gdb\Orthos_2011")
arcpy.mapping.AddLayer(df, addOrtho2011, "TOP")

I can't figure out what else I have to do to add the actual ortho part of the raster catalog. Any suggestions?
Cheers.