Vixen SLV 5mm eyepiece 50° 1.25″
The Vixen SLV 5mm is a top-tier planetary eyepiece built around a 7-element lanthanum optical design that delivers exceptional image quality across the entire 50° apparent field of view. Every optical surface is fully multi-coated with anti-reflection coatings to maximize light transmission and color fidelity, revealing fine planetary detail with outstanding clarity and contrast. The SLV series is widely regarded among serious observers as one of the best choices available for demanding planetary and lunar work.
Key features
Optical performance
The lanthanum glass elements used in the SLV series offer higher refractive index and lower dispersion than standard glass, which translates directly into reduced chromatic aberration and superior edge-to-edge sharpness. Images are crisp, color-accurate and free from the ghosting or flare that can affect lower-quality eyepieces. The fully multi-coated optics ensure that even the subtlest surface markings on planets or delicate double star configurations are rendered faithfully.
Comfortable long-session observing
A generous 20mm eye relief makes the SLV 5mm equally comfortable for observers who wear eyeglasses and those who do not. The twist-up eyecup can be extended or retracted to dial in the exact eye-to-lens distance that works best for you, significantly reducing eye fatigue during extended observing sessions. Whether you are spending an hour tracking Jupiter or methodically working through lunar craters, the ergonomics of this eyepiece hold up session after session.
Filter compatibility
The standard 1.25″ barrel is machined with a filter thread, so the SLV 5mm accepts the full range of 1.25″ filters - lunar, planetary, color contrast and light-pollution filters - without any adapters. This makes it straightforward to combine the eyepiece with your existing filter collection and optimize views for specific targets.
Recommended use
A 5mm focal length delivers high magnification and is best matched to telescopes operating at f/10 or longer. At these focal ratios the eyepiece produces its finest performance with minimal field curvature. It is an ideal choice for:
- Detailed observation of solar system planets - Jupiter's cloud belts, Saturn's ring divisions, Mars surface features, Venus cloud patterns
- High-resolution lunar work - craters, rilles, mountain ranges and fine surface texture
- Close double star splitting
- Any application where maximum detail and sharpness at high power are the priority
If you are looking for a planetary eyepiece that meets the highest observing standards, the Vixen SLV series is a proven answer. Its combination of lanthanum optics, long eye relief and robust construction makes it a reference-class tool for any serious amateur or advanced observer.
Technical specifications
| Parameter |
Value |
| Focal length |
5mm |
| Apparent field of view |
50° |
| Barrel diameter |
1.25″ |
| Eye relief |
20mm |
| Optical design |
7-element lanthanum |
| Coatings |
Fully multi-coated (all surfaces) |
| Eyecup |
Twist-up, adjustable |
| Filter thread |
1.25″ standard |
| Recommended focal ratio |
f/10 and above |