I have to agree with Dennis and Steve, Pluto is just not that Big
I have been Observing Pluto for the last four days with a 16" Newtonian,6mm RADIAN eyepiece, (300XMAG), and Pluto at 14xmag is just a minescule dot compared to the field stars.
I took your image out to the scope last night, and I confirmed my view
