Orion Edge On Planetary 12.5 mm

Orion Edge On Planetary Eyepiece 12.5 mm (31.7 mm)

• High-magnification eyepiece with 12.5 mm focal length and 31.7 mm (1.25") designed for exceptional observation of planets and the Moon in any telescope.

• The flat-field eyepiece design ensures sharp focus all the way to the edge of its wide apparent field of view of 55 degrees.

• Barrel distortion and field curvature, typically seen in standard eyepieces, are not visible in Orion Edge-On eyepieces.

• Offers a long eye relief of 20 mm for great comfort with or without glasses.

Flat field

The Edge-On planetary eyepieces from Orion deliver flat-field performance for solar system observation in the form of medium and high magnification focal lengths. Each eyepiece uses a sophisticated 7-element lens design reminiscent of complex and expensive eyepieces. This design provides a perfectly flat image, with precise focus from center to edge of the wide apparent field of view of 55 degrees. Barrel distortion and field curvature aberrations, common in standard eyepieces, have virtually disappeared.

Pushing the magnification

The Orion Edge-On planetary eyepieces allow you to push the power, whether probing the lunar terminator or studying the jovian cloud belts. The optics are fully multi-coated for high light transmission, and each eyepiece has an eye relief of 20 mm for better observing comfort. Other interesting details: blackened lens edges, foldable rubber eyecups, and 1.25" threaded tubes for filters.