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This is why I have posted in the past my thoughts on Field curvature of certain types of telescopes. I would not mind checking this eyepiece in a fast 4.5 Newtonian of different make to confirm the existence of field curvature problems. If there is a serious field curvature problem with this eyepiece then I would have to claim that the recent review of this eyepiece on Cloudynights.com is full of !@#!$!@#$
Joe
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