I had been wanting to try imaging 46P with the 200mm telephoto lens I have.   I thought I could bust through the LP with the addition of the Lumicon 72mm Deep Sky filter that fits that lens.  Oh, well… not enough pass-through for the comet wavelengths and blocking of the LP.  It helped, but not enough in the white zone I was shooting from.  It works for H-Alpha nebulae, but not much for other stuff.