Telescopes & Astronomy

The Sirius 3x Barlow lens triples your telescope's magnification, letting you explore lunar craters and planetary details with stunning clarity. Its fully multi-coated, 3-element apochromatic design minimizes chromatic aberration for crisp, sharp images, while the built-in M42 thread doubles as a T-adapter for easy DSLR or SLR camera attachment.

• High-magnification 5mm focal length 1.25" eyepiece designed for exceptional planetary and lunar viewing through any telescope
• Flat field eyepiece design ensures sharp focus out to the edge of its wide 55-degree apparent field of view
• Barrel distortion and field curvature commonly seen in standard eyepiece designs are not seen in Orion Edge-On eyepieces
• Features a long 20mm eye relief for comfortable with or without eyeglasses

• High-magnification 12.5mm focal length 1.25" Edge-On Planetary eyepiece designed for exceptional views of the Moon and planets as well as compact celestial objects
• Flat field design ensures sharp focus out to the edge of their wide 55deg apparent field of view
• Barrel distortion and field curvature commonly seen in standard eyepiece designs are delightfully absent in the 12.5mm Edge-On Planetary
• Telescope eyepiece features a long 20mm eye relief for comfortable viewing even with eyeglasses on
• This amazingly affordable Orion Edge-On eyepiece won't have you on edge financially!

• This big, 2" eyepiece with 28mm focal length offers bright, sharp and pleasing views of deep-space objects
• 3-element lens design with multi-coatings for efficient light transmission
• Eye relief is a long 20mm, particularly attractive to eyeglass wearers
• Delightfully free of pincushion distortion and chromatic aberration
• Threaded for use with 2" eyepiece filters