Quote:
Originally Posted by cydonia
Hi,
Can anyone tell me how sharp the stars are at the Edge of field in this eyepiece in f5 and f10 scopes? Which would be the better eyepiece between this one and a Televue 27mm Panoptic?
Thanks
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Hi,
I own a 27mm TV Panoptic and a 31mm TV Nagler T5. I have also used the 30mm Pentax XW. Optically the 30mm Pentax XW is a class above the 27mm TV Panoptic, which itself is a very good eyepiece. Optically, I also rate the 30mm Pentax XW ahead of the 31mm Nagler T5. However, at this longer focal length my objective is to maximise the FOV, not contrast and light throughput (where the pentax excels). I keep the 27mm Panoptic for use as my lower power eyepiece when I use the 10" scope, which isn't very often, as the 31mm Nagler has balance issues in the 10" scope.
The 30mm Pentax XW is one of the very very best eyepieces money can buy, at any price. Highly recomended.
Cheers,
John B