Explore Scientific 1.25" 72° ED Series Waterproof Eyepiece - 20mm
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- Wide 72° apparent field for immersive low-power views.
- 20 mm focal length ideal for deep-sky scanning and larger targets.
- Premium ED glass for sharp contrast-rich performance.
- Argon-purged, waterproof construction for reliable all-weather observing.
72° ED Series: Tiny Titan with High Power Performance
The Explore Scientific 1.25-inch 72° ED Waterproof Eyepiece series is built for observers who love sweeping star fields, large nebulae, and richly framed open clusters. Its versatile 20 mm focal length delivers comfortable low-to-medium magnification, making it an excellent choice for deep-sky exploration, lunar observing, and general-purpose viewing. Paired with a generous 72° apparent field of view, this eyepiece creates an immersive window into the night sky while keeping targets in view longer—especially helpful on manual mounts.
Inside, premium ED glass and a fully multi-coated optical design work together to maximize contrast, sharpness, and light transmission. Expect crisp star fields, dark sky backgrounds, and excellent edge-to-edge clarity. The waterproof construction adds long-term durability and protection from dew or changing weather, making it a dependable companion for backyard sessions or trips to dark skies. Comfort is part of the package too, with user-friendly ergonomics that make longer observing sessions more enjoyable. If you’re looking for a premium wide-field eyepiece that blends comfort, durability, and sharp optical performance, the Explore Scientific 20 mm 72° is ready to become your go-to favorite.
ED Glass Eyepieces Explained: Clarity, Contrast, and Performance!
Choosing the right telescope eyepiece has a direct impact on how much detail you can see and how immersive your observing experience feels. One of the most important features to look for in a high-quality eyepiece is ED glass, also known as extra-low dispersion glass. This advanced optical material is designed to improve image clarity, reduce distortion, and enhance contrast across a wide range of observing conditions.
In practical terms, ED glass helps deliver sharper views of planets, more defined star fields, and greater visibility of deep sky objects like nebulae and galaxies. By reducing chromatic aberration, which can appear as unwanted color fringing around bright objects, ED eyepieces produce cleaner and more natural images. This allows your telescope to perform closer to its full potential.
Whether you are observing fine planetary detail at higher magnification or scanning wide areas of the night sky, an ED eyepiece provides a noticeable improvement in image quality. It is one of the most effective upgrades you can make to enhance both clarity and overall viewing performance.
Other Information
- Country of Manufacture: China
72° ED Series: Tiny Titan with High Power Performance
The Explore Scientific 1.25-inch 72° ED Waterproof Eyepiece series is built for observers who love sweeping star fields, large nebulae, and richly framed open clusters. Its versatile 20 mm focal length delivers comfortable low-to-medium magnification, making it an excellent choice for deep-sky exploration, lunar observing, and general-purpose viewing. Paired with a generous 72° apparent field of view, this eyepiece creates an immersive window into the night sky while keeping targets in view longer—especially helpful on manual mounts.
Inside, premium ED glass and a fully multi-coated optical design work together to maximize contrast, sharpness, and light transmission. Expect crisp star fields, dark sky backgrounds, and excellent edge-to-edge clarity. The waterproof construction adds long-term durability and protection from dew or changing weather, making it a dependable companion for backyard sessions or trips to dark skies. Comfort is part of the package too, with user-friendly ergonomics that make longer observing sessions more enjoyable. If you’re looking for a premium wide-field eyepiece that blends comfort, durability, and sharp optical performance, the Explore Scientific 20 mm 72° is ready to become your go-to favorite.
ED Glass Eyepieces Explained: Clarity, Contrast, and Performance!
Choosing the right telescope eyepiece has a direct impact on how much detail you can see and how immersive your observing experience feels. One of the most important features to look for in a high-quality eyepiece is ED glass, also known as extra-low dispersion glass. This advanced optical material is designed to improve image clarity, reduce distortion, and enhance contrast across a wide range of observing conditions.
In practical terms, ED glass helps deliver sharper views of planets, more defined star fields, and greater visibility of deep sky objects like nebulae and galaxies. By reducing chromatic aberration, which can appear as unwanted color fringing around bright objects, ED eyepieces produce cleaner and more natural images. This allows your telescope to perform closer to its full potential.
Whether you are observing fine planetary detail at higher magnification or scanning wide areas of the night sky, an ED eyepiece provides a noticeable improvement in image quality. It is one of the most effective upgrades you can make to enhance both clarity and overall viewing performance.
| Manufacturer | Explore Scientific |
|---|---|
| Eyepiece Series | Explore Scientific 72° ED Series |
| Focal Length | 20 mm |
| Barrel Size | 1.25 in |
| Apparent Field of View (Mfg Specified) | 72° |
| Filter Threads | M28.5x0.6 |
| Coatings | Fully Multi-Coated |
| Protective Storage Container Included | No |
| Optical Design | ED (Extra-Low Dispersion) |
| End Caps | 2 |
| Parfocal | Yes |
| Rubber Eye Guard | Yes - Rubber Folding |
| Warranty | Explore Scientific Limited Lifetime Warranty |
| Country of Manufacture | China |
- 1x 72° ED Series 1.25-inch Eyepiece - 20 mm
- Wide 72° apparent field for immersive low-power views.
- 20 mm focal length ideal for deep-sky scanning and larger targets.
- Premium ED glass for sharp contrast-rich performance.
- Argon-purged, waterproof construction for reliable all-weather observing.
72° ED Series: Tiny Titan with High Power Performance
The Explore Scientific 1.25-inch 72° ED Waterproof Eyepiece series is built for observers who love sweeping star fields, large nebulae, and richly framed open clusters. Its versatile 20 mm focal length delivers comfortable low-to-medium magnification, making it an excellent choice for deep-sky exploration, lunar observing, and general-purpose viewing. Paired with a generous 72° apparent field of view, this eyepiece creates an immersive window into the night sky while keeping targets in view longer—especially helpful on manual mounts.
Inside, premium ED glass and a fully multi-coated optical design work together to maximize contrast, sharpness, and light transmission. Expect crisp star fields, dark sky backgrounds, and excellent edge-to-edge clarity. The waterproof construction adds long-term durability and protection from dew or changing weather, making it a dependable companion for backyard sessions or trips to dark skies. Comfort is part of the package too, with user-friendly ergonomics that make longer observing sessions more enjoyable. If you’re looking for a premium wide-field eyepiece that blends comfort, durability, and sharp optical performance, the Explore Scientific 20 mm 72° is ready to become your go-to favorite.
ED Glass Eyepieces Explained: Clarity, Contrast, and Performance!
Choosing the right telescope eyepiece has a direct impact on how much detail you can see and how immersive your observing experience feels. One of the most important features to look for in a high-quality eyepiece is ED glass, also known as extra-low dispersion glass. This advanced optical material is designed to improve image clarity, reduce distortion, and enhance contrast across a wide range of observing conditions.
In practical terms, ED glass helps deliver sharper views of planets, more defined star fields, and greater visibility of deep sky objects like nebulae and galaxies. By reducing chromatic aberration, which can appear as unwanted color fringing around bright objects, ED eyepieces produce cleaner and more natural images. This allows your telescope to perform closer to its full potential.
Whether you are observing fine planetary detail at higher magnification or scanning wide areas of the night sky, an ED eyepiece provides a noticeable improvement in image quality. It is one of the most effective upgrades you can make to enhance both clarity and overall viewing performance.
Other Information
- Country of Manufacture: China
| Manufacturer | Explore Scientific |
|---|---|
| Eyepiece Series | Explore Scientific 72° ED Series |
| Focal Length | 20 mm |
| Barrel Size | 1.25 in |
| Apparent Field of View (Mfg Specified) | 72° |
| Filter Threads | M28.5x0.6 |
| Coatings | Fully Multi-Coated |
| Protective Storage Container Included | No |
| Optical Design | ED (Extra-Low Dispersion) |
| End Caps | 2 |
| Parfocal | Yes |
| Rubber Eye Guard | Yes - Rubber Folding |
| Warranty | Explore Scientific Limited Lifetime Warranty |
| Country of Manufacture | China |
- 1x 72° ED Series 1.25-inch Eyepiece - 20 mm
Explore Scientific 1.25" 72° ED Series Waterproof Eyepiece - 20mm