The Explore Scientific 6.5mm 52° Series Eyepiece offers powerful mid-to-high magnification that’s perfect when you want to push your telescope to its optical limit. Whether you’re observing planetary detail, lunar terrain, or tight double stars, this eyepiece bridges the gap between moderate and extreme magnifications, delivering crisp resolution and immersive contrast.
With a 52° apparent field of view, this eyepiece provides just the right balance of magnification and framing—ideal for isolating compact deep-sky targets without losing orientation. The 15.9mm of eye relief ensures lasting comfort, even during extended observing sessions or for eyeglass wearers.
Engineered with a 6-element / 3-group optical layout, EMD coatings, and edge-blackened lenses, this eyepiece is built for serious visual performance. The argon-purged waterproof housing prevents fogging and internal contamination, ensuring pristine views in any environment.
CA Residents: Prop 65 WARNING(S)
🌟 Features & Benefits
- 6.5mm focal length delivers controlled high magnification for planetary, lunar, and tight deep sky objects
- 52° apparent field of view offers immersive views with exceptional clarity across the entire field
- 15.9mm eye relief allows for comfortable use, even with glasses or prolonged sessions
- 6-element / 3-group optical design provides crisp resolution with minimal distortion
- Fully multi-coated optics with EMD (Enhanced Multi-Layer Deposition) coatings for maximum contrast and brightness
- Edge-blackened lenses minimize stray light and internal reflections
- Argon-purged waterproof construction resists internal fog, moisture, and dust for long-term durability
- 1.25" barrel with double taper fits all standard telescope focusers and diagonals securely
- Flip-down silicone eyecup blocks ambient light and supports ergonomic viewing
- Ideal for averted vision techniques to draw out faint celestial features
🎯 Who It’s For
- Astronomers seeking high magnification without excessive image dimming
- Ideal for lunar and planetary detail, double star splitting, and compact nebulae
- Observers who want optical precision in changing or excellent seeing conditions
- Anyone needing a waterproof, rugged eyepiece for field use
🔭 What You’ll Be Able to See
- Crisp views of planetary features, such as Saturn’s Cassini Division or Jupiter’s bands
- Detailed craters and ridges on the lunar surface
- Compact planetary nebulae, globular clusters, and tight star groupings
- Faint targets revealed more clearly using averted vision
🎒 What’s Included
- Explore Scientific 6.5mm 52° Series Waterproof Eyepiece
- Flip-down silicone eyecup
- Top and bottom dust caps
- Soft protective pouch
Specs
| Item Number | EPWP5265–01 |
|---|---|
| Focal Length | 6.5mm |
| Apparent Field of View | 52° |
| Eye Relief | 15.9mm |
| Field Stop Diameter | 5.9mm |
| Optical Elements / Groups | 6 Elements in 3 Groups |
| Lens Coatings | EMD (Enhanced Multi-Layer Deposition) |
| Barrel Size / Type | 1.25" O.D. / Double Taper |
| Filter Thread | Standard 1.25" (1.125" x 42 TPI) |
| Waterproofing | Argon Purged; O-Ring Sealed |
| Test Rating | Submersible to 1 Meter for 30 Minutes |
| Eyecup | Removable Flip-Down Silicone Rubber |
| Length | 103.5mm |
| Width | 43mm |
| Weight | 226.8g (8 oz.) |
| Materials | Optical Glass, Aluminum, Steel, Rubber |
| Markings | Laser Engraved: Focal Length, Series, Serial Number, Brand |
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: