Orion 40mm Sirius Plossl Eyepiece – 1.25″

The eyepieces in Orion’s Sirius Plossl line are their best-selling telescope eyepieces. They are of exceptional quality and within a reasonable price range!

Offering a wide 43 apparent field of view, this 40 mm Orion Sirius Plossl Telescope Eyepiece provides extremely sharp images of impressively high contrast. It’s perfect for all types of telescopes: reflector, refractor, and catadioptric. The Plossl 4-element design is renowned for its outstanding performance, and has become the standard by which all other telescope eyepieces are judged and manufactured.

The Sirius Plossl optical system is multi-coated for excellent light transmission and bright views. Lens edges are blackened to reduce scattering of stray light and maximize contrast.

The lenses are mounted in black-anodized aluminum housings with a 1.25″-diameter chrome-plated brass barrel for both durability and precision fit. The barrel is internally threaded to accept standard telescope filters. The built-in rubber eyeguard helps to block out ambient light and position the eye.

This 40 mm Orion Sirius Plossl Telescope Eyepiece yields the largest-possible field of view in a 1.25″ barrel. It’s wonderful for wide-field scanning and detailed observations of large diffuse subjects.

• This 1.25″ 40mm focal length eyepiece is perfect for all types of telescopes- reflectors, refractors, and catadioptrics
• Multi-coated for optimal light transmission and bright view quality
• Excels at wide-field surveying and detailed observations of large diffuse subjects
• The 43 degree apparent field of view offers clear, sharp images of impressively high contrast