Thank you Peter Loo.
There are in fact 5 or more small galaxies in the frames beside M51.
There are two on bottom left of the frame but not seen in the photo because it have been crop off.
Except for IC4263 that was obvious, the rest I have not able to cfm who they are.
I can't argue the fact that good equipment will produce better result.
I am a believer of that.
Having said that, one must always recognize a good polar alignment helps in better tracking.