The Explore Scientific 3X Focal Extender (1.25") is the perfect tool for pushing the limits of your telescope’s power while maintaining the eye relief and clarity of your favorite long-focal-length eyepieces. Whether you're exploring the rugged terrain of the Moon or observing fine planetary detail, this extender triples your magnification without compromising comfort — especially useful for fast focal ratio telescopes.
Like all Explore Scientific focal extenders, it features fully EMD-coated optics for optimal light transmission and edge-blackened elements to reduce glare and enhance contrast. The lightweight and compact design makes it an ideal companion for both backyard sessions and travel setups.
CA Residents: Prop 65 WARNING(S)
⭐ Features & Benefits
- 3X magnification for any compatible 1.25" eyepiece
- Preserves original eye relief for comfortable viewing
- Fully EMD-coated lenses improve brightness and contrast
- Edge-blackened optics minimize internal reflections
- Lightweight and compact — perfect for field use and portability
- Expands the versatility of your eyepiece collection
🌟 Who It’s For
- Amateur astronomers using fast f/ratio telescopes
- Lunar and planetary observers needing higher power
- Users who want to maximize eyepiece performance
- Anyone seeking sharp, high-magnification views without sacrificing comfort
🎯 What You’ll Be Able to See
- High-resolution lunar details, including small craterlets and rilles
- Planetary features such as Jupiter’s belts and Saturn’s rings
- Double stars and fine features at extreme magnification
- Sharper views of bright deep-sky objects under high power
🎒 What’s Included
- Explore Scientific 3X Focal Extender (1.25")
- Top and bottom dust caps
- Instructional material/documentation
Specs
| Item Number | FE03–125 |
| Barrel Size | 1.25-inch |
| Length | 93mm |
| Width | 45mm |
| Weight | 249g / 8.7 oz |
Warranty Information
This product is covered by a Limited One-Year USA Warranty, valid when registered within 60 days of purchase. To activate your warranty, please visit the Explore Scientific website and complete the registration form at: