Vixen Lanthanum Eyepieces

More Information  · Recommended Accessories  · Images of Some Features Price $139.00 $179.00 SAVE: $40.00 (22%) List Price $220.00 Field of view 50° Eye Relief 20mm Focal Length 20mm Number of optical elements 6 Barrel Size 1.25" Weight 4.6 oz. Warranty 5 years Telescope Eyepiece Formula To calculate the magnification and approximate actual field of view of this eyepiece on your telescope, enter the focal length of your telescope below and press the "Calculate" button. mm

The optical performance and width of field of the 20mm Vixen are comparable to other quality eyepieces in its price range. There is a slight loss of contrast when compared to simpler eyepiece designs, such as a four-element Plössl, due to the additional optical elements needed to achieve the long eye relief of this Vixen. The loss is minimal though, and this 20mm Vixen would still have the benefit of much longer eye relief (particularly at a price half that of other 20mm eye relief eyepieces in this focal length range).