Sirius Plössl 40mm 1.25″

Code: OR-08730

The 40mm Sirius Plossl 1.25″ eyepiece is ideal for all types of telescopes: reflector, refractor, and catadioptric
Eyepiece offers a 43-deg apparent field of view for clear, sharp images of impressively high contrast
Multi-coated optics wfor excellent light transmission
Superb 40mm focal length eyepiece excels at wide-field surveying and detailed observations of large diffuse subjects
Threaded for use with all Orion 1.25″ eyepiece filters


Out of stock


It’s no surprise that the eyepieces in our Sirius Plossl line are our best-selling telescope eyepieces. Quality this good usually costs a lot more.

Offering a wide 43° apparent field of view, this 40mm Orion Sirius Plossl Telescope Eyepiece provides extremely sharp images of impressively high contrast. It’s ideal 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.

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 durability and precision fit. The barrel is internally threaded to accept standard telescope filters. The built-in rubber eyeguard enhances viewing by helping to block out ambient light and position the eye.

This 40mm telescope eyepiece yields the largest-possible field of view in a 1.25″ barrel. It’s superb for wide-field scanning and detailed observations of large diffuse subjects. Largest exit pupil and highest possible brightness.

Additional information

Weight 1 lbs
Dimensions 4 × 2 × 2 in


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