Focal Length: 50mm (0.39″)
Eye Relief: 38mm
Apparent Field of View (deg): 45°
Barrel Size: 2″ (50.8 mm)
Coatings: Fully multi coated optics
Design: 2 Group, 4 Element
Weight: 425 grams (15 ounces)
Vixen 2″ NLV 50mm telescope eyepiece features fully multi-coated for high light transmission. The long eye relief and wide field of view ensure comfortable long hours of viewing. High grade lanthanum glass ensures high contrast images to the edge of the viewing circle with excellent aberration correction. The extra low power of this eyepiece is ideal for getting wide field views on larger telescopes of 250mm (10″) or more aperture. Even for users of 200mm (8″) aperture telescopes, there are times when you just want a bit less power to increase your field of view in searching the night sky.
Why use lanthanum eyepieces? Wide apparent field of view and generous eye relief are two of the main reasons, something eyeglass wearers in particular can appreciate.