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Originally Posted by ausastronomer
Jim,
Nicely done review.
I own both a 27mm Panoptic and 30mm GSO Superview and regularly use both in my 10"/F5 GSO dob. My findings are very consistent with yours.
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I have looked through two examples of the 30mm GSO SV and both left me similarly unimpressed. Contrast and clarity were poor, with abberations becomming intrusive approx 70% from centre to edge.
I used to own a 27mm panoptic, which I rate as one of the best eyepieces I have ever had the fortune to look through.
I have seen mention of two different versions of the SV, and this could be the case, as I cant imagine anyone with any experience rating the SV's I have seen as being within coo-ee of the 27mm panoptic
