Binorum Planetary Pro 8mm 58° 1.25″ Eyepiece
Looking for an eyepiece that gets the best from your telescope when observing planets and the Moon - without disappointing you on deep-sky objects either? The Binorum Planetary Pro 8mm 1.25″ eyepiece was designed with one clear goal: to deliver sharpness and contrast on a level with classic orthoscopic and Plössl designs, while adding a noticeably more comfortable 58° field of view and a generous 16mm eye relief. That combination makes a real difference during long observing nights. A 58° field gives you enough sky to navigate easily, without any sacrifice in sharpness or contrast at the edges.
6-element optics for precise, high-contrast images
The Binorum Planetary Pro uses a six-element optical design that keeps images sharp right to the edge of the field and reduces chromatic aberration to a minimum. In practice, this means no distracting colour fringing on Jupiter's atmospheric bands, clean and contrastive rings around Saturn, and lunar craters rendered with the kind of fine detail that matters. Unlike many eyepieces in a similar price range, the Planetary Pro also avoids scattered light - the kind that quietly but consistently lowers the contrast of fine detail. The result is an image that reflects exactly what your telescope is capable of. The eyepiece neither adds nor takes anything away from its performance.
Internal design that protects contrast
The entire internal body of the eyepiece is blackened, and all internal baffles are fitted with anti-reflection micro-dampers along their edges, combined with full black anodising throughout. This eliminates unwanted reflections inside the optical system that would otherwise degrade image contrast. All air-to-glass surfaces carry broadband FMC (Fully Multi-Coated) anti-reflection coatings, which maximise light transmission and deliver as many photons as possible to your eye.
The screw-type eyecup with a flexible rubber cover lets you adjust the height smoothly to match your eye relief precisely - whether you observe with glasses or without. This detail contributes significantly to comfort during longer sessions and is especially appreciated by those who wear corrective lenses. The eyepiece is also suitable for afocal photography with a DSLR or compact camera, making it a useful tool for entry-level astrophotographers as well.
About Binorum
Binorum is a brand born from a genuine passion for astronomy. The team behind it consists of people who spend their own nights at the telescope and know exactly what a serious observer needs. The philosophy is straightforward: quality optics and thoughtful construction with no unnecessary compromises, at a price accessible to a wider astronomy community. Binorum offers one of the broadest ranges of astronomy accessories available - from eyepieces and filters to adapters and accessories - so your setup stays complete without the need to source parts from multiple manufacturers. If you want every detail of the night sky rendered faithfully and without compromise, Binorum shares that ambition.
Technical specifications
| Parameter |
Value |
| Focal length |
8mm |
| Field of view |
58° |
| Eye relief |
16mm |
| Barrel diameter |
1.25″ |
| Optical design |
6-element |
| Coatings |
FMC (Fully Multi-Coated), broadband |
| Photography |
Suitable for afocal photography |
Who is this eyepiece for?
Planetary and lunar observers
The Planetary Pro 8mm is optimised for high-contrast views of planets and the Moon. It suppresses chromatic aberration and scattered light, so fine detail stands out clearly.
Observers who wear glasses
The 16mm eye relief and adjustable screw eyecup make this eyepiece fully comfortable for observers who wear corrective lenses.
Long-session observers
The 58° field of view and comfortable eye relief reduce eye fatigue during extended observing nights.
Entry-level astrophotographers
The eyepiece supports afocal photography with a DSLR or compact camera, making it a practical starting point for those new to astrophotography.
