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Rod,
I could have been a bit harsh in my assesment of the GSO Superviews. The 1.25" versions don't row my boat in a fast scope but the 2" versions do a good job, exceptional considering their price. I actually own a 2" 30mm and its about the best "cheap" 2" semi widefield eyepiece going IMO. I did a comparison with my 2" 30mm GSO against a University Optics 25mm MK70 in my own 10"/F5 scope and in an 8"/F10 Celestron SCT. Despite the UO having a shorter focal length the GSO was a better eyepiece optically in both scopes. The GSO clealry provided better EOF performance at F5 and at F10. The UO had less scatter and better contrast. The UO is better mechanically in terms of finish and construction quality although the Superviews are also very good in this regard, especially considering their price.
I have revised my rating on the 2" GSO Superviews from
a 5 to a 5.5
The 1.25" versions are 1/2 decent in a slow scope like your F10 SCT so don't think your missing a whole lot. Certainly they represent the best "value for money" eyepieces available for use in a scope such as yours.
CS-John B
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