Hi Tony , I have a 2 inch Celestron 31mm , 82* Axiom LX and it works very , very well in my C9.25 .
Sharp almost to the edge and that's a l-oo-nn-gg way across .
I love mine its a great eyepiece.
These are (were , as they are not made anymore) a poor mans TelVue 31mm Nagler , almost as good , as huge and heavy as the telemangler at a cheaper price
sorry its no help , but if you shop around you might find one 2nd hand .
Celestron now sell the Luminos? style that look a lot like the Axiom's but from what I have heard are not as good , made in another factory I am lead to believe.
But these come with some new Celestrons , especially the 23mm one so there are a few Luminos out there ?? worth a try ?
.
Brian.