The Explore Scientific 9mm 120° Series Eyepiece redefines what’s possible in visual astronomy. With an unmatched 120° apparent field of view, this ultra-wide eyepiece delivers jaw-dropping, immersive views—placing you inside the star field rather than just observing it.
Blending medium-high magnification with a massive field, it’s the perfect tool for exploring nebulae, galaxies, star clusters, and even lunar and planetary detail. The wide field of view also allows longer tracking-free observing—ideal for Dobsonian telescopes and portable setups like the Twilight I mount.
This eyepiece supports averted vision techniques, helping you detect fainter objects by utilizing your eye's peripheral sensitivity. Built for both performance and comfort, it features fully multi-coated optics, edge-blackened lens elements, and a 12.5 mm eye relief for relaxed extended viewing.
CA Residents: Prop 65 WARNING(S)
⭐ Features & Benefits
- Ultra-wide 120° apparent field of view—the widest available
- Combines high magnification with a panoramic field for unmatched versatility
- Fully multi-coated lenses maximize light transmission
- Edge-blackened optics suppress stray light and improve contrast
- 12.5 mm eye relief for comfortable viewing, even during long sessions
- Ideal for Dobsonian and grab-and-go mounts with no tracking
- Enhances faint object detection with averted vision technique
🌟 Who It’s For
- Observers seeking the widest immersive field available today
- Deep-sky enthusiasts chasing galaxies, nebulae, and globular clusters
- Planetary and lunar viewers wanting crisp detail with context
- Users of non-tracking telescopes who need longer drift time
- Anyone looking to upgrade their collection with a top-tier premium eyepiece
🎯 What You’ll Be Able to See
- Large nebulae in stunning contrast and scale
- Entire star clusters with intricate internal detail
- Faint galaxies previously beyond reach with standard eyepieces
- Expansive lunar landscapes and planetary atmospheres
- High-magnification views with a true spacewalk feel
🎒 What’s Included
- Explore Scientific 9mm 120° Series Waterproof Eyepiece
- Dust caps for both ends
- Protective bolt-style storage case
- Documentation and warranty support
Specs
| Item Number | EPWP12009–01 |
| Focal Length | 9mm |
| Apparent Field | 120° |
| Eye Relief | 12.5mm |
| Field Stop Diameter | 15.7mm |
| Barrel Size | 2.00" |
| Length | 145mm |
| Width | 60mm |
| Weight | 21.2oz / 602g |
| Waterproofing | Argon Purged / O-Ring Sealed |
| Eyecup | Removable Soft Silicone Rubber |
Warranty Information:
This product includes a Limited One-Year USA Warranty, which converts to the Explore STAR Transferable Extended Life of the Product Warranty when registered within 60 days of purchase.
To activate your warranty, register your product at:
www.explorescientific.com/pages/product-registration