Sky-Watcher Silver Plossl 12.5mm 1.25 inch Eyepiece

Every telescope delivers its sharpest, most satisfying views when paired with an eyepiece that respects the instrument’s optics. The Sky-Watcher Silver Plossl 12.5mm steps into that role with a classic four-element Plossl design, chosen by observers who want crisp planetary detail and clean lunar contrast without spending a fortune. Its 12.5mm focal length hits a versatile sweet spot: enough magnification for Saturn’s rings and Jupiter’s cloud belts, yet still comfortable for framing brighter deep-sky targets like the Orion Nebula or the Double Cluster.

Who is it for

This eyepiece suits intermediate amateurs upgrading from basic kit eyepieces, as well as beginners who want a dependable mid-power option. If your telescope has a 1.25-inch focuser or diagonal—whether a refractor, reflector, or catadioptric—this Plossl will slide straight in. It is especially useful for lunar and planetary sessions, where the well-corrected field and moderate eye relief make long observing stretches less tiring.

Main features

• Classic 4-element Plossl optical design in a symmetrical doublet arrangement.
• Multi-coated glass surfaces to boost light transmission and reduce ghosting.
• Standard 1.25-inch (31.7 mm) barrel with filter threads for Moon, planetary, or nebula filters.
• Fold-down rubber eyecup for comfortable positioning, with or without eyeglasses.
• Silver anodized barrel with black upper housing, plus blackened lens edges to suppress internal reflections.
• Apparent field of view around 50–52°, giving a natural, immersive window rather than a narrow tunnel.

Specifications

• Focal length: 12.5 mm
• Barrel size: 1.25" (31.7 mm)
• Apparent field of view: 50–52°
• Optical design: Plossl, 4 elements in 2 groups
• Coatings: Multi-coated
• Eye relief: 9–10 mm
• Filter threads: Yes, standard 1.25"
• Eyecup: Fold-down rubber
• Barrel material: Anodized aluminium
• Lens edge blackening: Yes
• Compatibility: 1.25" focusers and diagonals
• Parfocal: Generally close within Plossl series

Tips

For the sharpest planetary views, let your telescope cool down to ambient temperature before observing, and use this eyepiece with a stable mount to avoid vibrations at higher magnifications. A 12.5mm Plossl pairs beautifully with a 2x Barlow lens for nights of exceptional seeing, effectively becoming a 6.25mm high-power eyepiece. Keep the dust caps on when not in use, and clean the lenses only with a soft brush or proper optical cloth to preserve the multi-coatings.