Posted By Jerry Mason
I'm really surprised, pleasantly so, to hear it performed so well near the edges in your fast Dob. I bought a Series 5000 14mm UWA, here on Astromart, to compare with my 4000. I really like its compact size and rotating eyecup (not the grease of course) over the larger 4000 but I can only use it in my f9 refractor and f15 7" Mak. The stars are simply a mess near the edges in my f4.5 and f6 Newts.
Were you using a Parcor with the 31mm?
p.s. So do you think we could impose on you to do a review of this line of eyepieces as well? I'd volunteer to send you my 14mm.