Meade series 5000 MWA eyepiece, 100 Degree, 21mm focal length, 2" Barrel Size, 45mm field stop. Meade MWA series eyepieces offer a gigantic 100 Degree apparent field of view for an amazing, panoramic observing experience like no other. All eyepieces are constructed with premium-grade and exotic optical glass, Fully multi-coated for great images, blackened lens edges for superior contrast, and feature folding eye cups.