Built for performance, durability, and viewing comfort, the Explore Scientific 16mm 68° Series Eyepiece is a top-tier choice for mid-power deep sky and planetary observation. With premium flat-field optics and a wide 68° apparent field of view, this eyepiece delivers sharp, contrast-rich views across the entire image plane.
Crafted with low-dispersion, high-index glass and treated with EMD (Enhanced Multi-Layer Deposition) coatings, the 16mm eyepiece maximizes light transmission while reducing glare and internal reflections. It offers crisp definition of planetary detail, deep sky structure, and open clusters—even at the edges of the field.
The argon-purged, waterproof housing protects against moisture, fogging, and fungal contamination, and each unit is submersion-tested at 1 meter for 30 minutes to guarantee its rugged sealing. The parfocal design allows quick focal length changes with minimal need to refocus, while the 11.9mm eye relief and fold-down silicone eyecup enhance observing comfort.
CA Residents: Prop 65 WARNING(S)
🌟 Features & Benefits
- 16mm focal length delivers versatile mid-range magnification
- 68° wide apparent field of view for immersive celestial observation
- Flat-field optical design ensures sharpness from center to edge
- Low-dispersion, high-index glass with EMD coatings for high contrast
- Parfocal construction allows seamless transitions between eyepieces
- Argon-purged and waterproof to resist fog, fungus, and environmental contaminants
- 11.9mm eye relief with fold-down silicone eyecup for adjustable comfort
- Individually tested waterproofing: submersion at 1 meter for 30 minutes
🎯 Who It’s For
- Amateur and professional astronomers who demand mid-power performance
- Eyepiece users looking for rugged protection against the elements
- Observers using Dobsonians, SCTs, refractors, and reflector telescopes
🔭 What You’ll Be Able to See
- Crisp planetary features and lunar surface detail
- Bright deep-sky objects like nebulae, star clusters, and galaxies
- Sharp imaging across large star fields and rich sky zones
🎒 What’s Included
- Explore Scientific 16mm 68° Series Waterproof Eyepiece
- Protective end caps
- Soft pouch for safe storage and transport
Specs
| Item Number | EPWP6816–01 |
|---|---|
| Focal Length | 16mm |
| Apparent Field | 68° |
| Eye Relief | 11.9mm |
| Field Stop Diameter | 18.2mm |
| Barrel Size | 1.25" |
| Length | 61.9mm |
| Width | 43.2mm |
| Weight | 5.5 oz / 158 g |
| Waterproofing | Argon Purged / O-Ring Sealed |
| Eyecup | Removable Flip-Down 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