Plossl Eyepiece, 25MM Multi-Coated Astronomy Lens Eyepiece Plossl, offering a wide 52° apparent field of view, this 6.3 mm 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 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 6.3 mm Orion Sirius Plossl Eyepiece is superb for high-power planetary and lunar observation, and well suited to double-star viewing when stable seeing conditions permit.