Billy, I'm guessing from your post you have a classic C5? I'm pretty sure Celestron made an optional diagonal that would accommodate .96, 1.25 and 2 inch eyepieces. The threads on the visual back should permit a little more aperture in the diagonal choice. Candidly, 28 bucks for a diagonal is not going to make the most of the good optics in your scope. I no longer own any Celestron scopes so I can't make any suggestions about specific diagonals, but I'd stay away from cheap accessories.
George
George
