Experience deep sky viewing like never before with the Explore Scientific 25mm 100° Series Waterproof Eyepiece. Designed to provide an ultra-wide, immersive field of view, this eyepiece opens a panoramic window into the cosmos—perfect for observing expansive nebulae, sweeping star fields, and distant galaxies. With a 100° apparent field of view, you can spend less time repositioning your telescope and more time discovering new celestial wonders.
Built for rugged performance in the field, the eyepiece is argon-purged and O-ring sealed to make it fully waterproof and resistant to internal fogging, dust, and fungal growth. Each unit is individually tested by submerging it in 1 meter of water for 30 minutes, ensuring you can trust it in all weather conditions.
The 25mm focal length makes it ideal for low-power, wide-field observation, while the generous 14.5mm eye relief provides comfort during extended sessions, even for those who wear glasses.
🌟 Features & Benefits
- 100° Apparent Field of View — Ultra-wide immersive views of the night sky
- Argon-Purged Waterproof Housing — Sealed against moisture, fog, and fungus
- Fully Multi-Coated Optics — Enhanced brightness and image clarity
- Edge-Blackened Lenses — Improved contrast by reducing stray light
- 14.5mm Eye Relief — Comfortable viewing, even with eyeglasses
- Precision Machined 2" Barrel — Solid, reliable fit in any 2" focuser
- Individually Submersion-Tested — Proven waterproof integrity for field reliability
🌌 Who It’s For
- Amateur and advanced astronomers seeking immersive wide-field views
- Deep sky observers looking for low-power sweeps of the Milky Way
- Telescope users who want a high-contrast, weatherproof eyepiece for rugged use
- Observers who wear glasses and need generous eye relief
🌇 What You’ll Be Able to See
- Expansive views of nebulae like the Veil and North America Nebula
- Sweeping star clusters such as the Pleiades and Beehive Cluster
- Bright galaxies including Andromeda and Triangulum
- Stunning low-power framing of lunar landscapes and large asterisms
🚒 What’s Included
- Explore Scientific 25mm 100° Waterproof Eyepiece
- Protective eyepiece caps
- Bolt-style storage case
- Documentation and warranty information
Specs
| Item Number | EPWP10025–01 |
| Focal Length | 25mm |
| Apparent Field | 100° |
| Eye Relief | 14.5mm |
| Field Stop Diameter | 41mm |
| Barrel Size | 2.00" |
| Length | 140mm |
| Width | 73mm |
| Weight | 41.5oz / 1177g |
| 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