9mm Orion Edge On Planetary Eyepiece

• 9mm focal length Orion Edge-On 1.25" telescope eyepiece designed for exceptional planetary and lunar viewing
• Flat field design ensures sharp focus out to the edge of the eyepiece's wide 55deg apparent field of view
• Barrel distortion and field curvature commonly seen in standard eyepiece designs are gone
• 9mm eyepiece has long 20mm eye relief for comfortable viewing even with eyeglasses on
• The amazingly affordable 9mm Edge-On eyepiece won't have you on edge financially!

Orion Edge-On Planetary telescope eyepieces bring flat-field performance to solar system viewing in the form of six medium- and high-magnification focal lengths. Each eyepiece employs a sophisticated 7-element lens design reminiscent of exotic, high-priced oculars. This design renders an optically flat image that's sharply focused from center to edge of the wide 55-degree apparent field of view. The barrel distortion and field curvature aberrations common in standard eyepiece designs are virtually gone.

Orion Edge-On Planetary telescope eyepieces let you push the power, whether you're canvassing the lunar terminator or studying the Jovian cloud belts. The optics are fully multi-coated for high light transmission, and each eyepiece has 20mm eye relief for viewing comfort. Other nice touches: blackened lens edges, pop-down rubber eyeguards, and 1.25" barrels threaded for filters.