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Originally Posted by Rodstar
I have an f/10 SCT, which I assume is the same f/ratio as yours.
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Rod,
Glenn's Celestron C9.25 is an F10 scope but because of smaller aperture the Focal length is only 2.35 metres compared to 2.54 metres with your 10" LX200. Consequently the 13mm Nagler in Glenn's scope is only giving 180X compared to about 195X in your scope. The 14mm Pentax XW in Glenn's scope gives about 170X and should be ideal as a medium high power eyepiece and should hold up on most nights of reasonable seeing.
CS-John B