Quote:
Originally Posted by wavelandscott
The 14 mm Pentax XW is no slouch. In my opinion the FC issue gets overhyped a bit and some people ignore a good eyepiece only from reading the web.
Having written all of that...don't overlook the Denkmeir 14 mm eyepiece in this range either...it is a cracker too!
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I agree 100% with Scott on this. While there certainly is some field curvature in some scopes with the 14mm XW, and the 20mm XW, I think it is way overplayed. In fact in my 18"/F4.5 Obsession, the 14mm XW gives an infinitely flatter field with a lot less EOF astigmatism than the 17mm Nagler T4, when both eyepieces are used without a paracorr. Both eyepieces combine superbly with a paracorr. In fact the 17mm Nagler improves remarkarbly when combined with a paracorr in a fast newtonian.
Cheers,
John B