Which diagonal

Folks,
I plan on purchasing a new LX90 in a couple of months. Sence I saved myself some money by illiminating the LX200,
I thought I would try yo optimize the LX90. It seems like I read, on one forum or another, that putting a 2 inch diagonal on this scope wont do much good as the back of the scope has a 1.25 inch hole. If that is true, and forgetting that there is a $70. difference, I'm looking at two diagonals, the 1.50" Teleview, Everbright-$190.00 or the 2" Williams( made for SCT.) $130.00. Any thoughts?
Ken

Hello Ken,

I found a nice improvement in upgrading my 1.25 inch
diagonal on my Celestron C-8 SCT to a 2 inch SCT type
Orion diagonal and my observing buddy likewise found
the 2 inch Meade SCT diagonal was better than his 1.25
inch diagonal. It seems that the explination is that
the larger mirror surface has less defects near the center
on the larger diagonal mirrors. I'm sure that either of
the mirrors you suggested would be even better than what
we have, but any 2 inch is a step up from the 1.25 inch
Meade stock diagonal and 1.25 icnh visual back. I've heard
that you can actually get a 2 inch light cone out of the
SCT rear port or something larger than 1.25 inches at any
rate. The Williams 2 inch units go very fast here on the
used market and are highly spoken of too. I will upgrade
someday, but for now the Orion 2 inch works for me.

Ed


supplied stock