Vixen Hi-Performance 2 group 4-element Super Plössl 1.25-inch (31.7mm) eyepiece
Vixen's high-grade quality affordable 2-group 4 element Super Plössl NPL series eyepieces offer flat and clear images with very good color correction. With Japanese designed optics, they are multi-coated for excellent light transmission. Each give very good performance in almost all types of telescopes. Quite wide fields and good eye relief. Modern design yields flat fields and clear images.
Features Twist-up eye cup
Focal Length 20mm
Apparent FOV: 50 Deg.
Eye Relief: 15mm
Of course there are other cheap alternative plossl designs out there (some are very poor) but none in this price range offer superb field edge cut-off, excellent contrast, colour correction and eye-relief.