Telescopes & Astronomy

The Sirius Optics Plössl 30mm eyepiece delivers a wide 50° apparent field of view, making it a versatile choice for both deep-sky and planetary observation. Its 1.25-inch barrel fits standard telescope focusers, and the 30mm focal length provides comfortable eye relief ideal for extended viewing sessions.

The Sirius Optics Plossl 12.5mm eyepiece delivers crisp, clear views at a mid-range magnification, making it an excellent all-around choice for lunar, planetary, and deep-sky observing. This affordable 1.25-inch eyepiece features the trusted Plossl design with fully coated optics, offering great value for beginners and seasoned astronomers alike.

• 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

• 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!

• 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

• Omni eyepieces offer a quality 4-element Plössl optical design at a super affordable price
• Rubber eyecups provide comfort and increase contrast. Leave them up or fold them down when wearing eyeglasses.
• Beautiful matte aluminum barrels and blackened lens edges prevent internal reflections
• 1.25” barrels are threaded to accept filters

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.

The Sirius Optics Plossl 15mm eyepiece delivers a generous 50°+ apparent field of view, making it a versatile choice for both deep-sky and planetary observation. Its classic symmetrical doublet design offers sharp, well-corrected views in any 1.25-inch focuser, while the 15mm focal length provides comfortable eye relief for extended viewing sessions.