Series 6 Economy Wide Field

More Information  · Recommended Accessories Price $29.95 $39.95 SAVE: $10.00 (25%) Field of view 65° Eye Relief 13mm Focal Length 20mm Number of optical elements 4 Barrel Size 1.25" Weight 3 oz. Warranty 2 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

While it’s particularly well-suited for use with Dobsonian scopes and short focal length refractors, it can provide “picture window onto space" images with any telescope type. The low price of this eyepiece also makes it a very affordable choice to buy in pairs for binoviewer use.

Its 13mm eye relief is quite reasonable for this focal length, although it can somewhat limit the field for eyeglass wearers. Since the Astro-Tech field is substantially wider to begin with than most other eyepieces in this price range, most eyeglass wearers won’t find the minor vignetting to be a drawback. Those who don’t wear glasses will see a huge field at only a fraction the cost of a more exotic wide field eyepiece.