Explore Scientific · Achromat Refractor
Explore Scientific 62 Degree 26mm Waterproof Telescope Eyepiece
Wide, sharp views with weather-sealed durability make this a reliable everyday eyepiece for serious observers.
Price updated Mar 22, 2026
Performance Scores
Overview
The Explore Scientific 62 Degree 26mm eyepiece sits in a useful sweet spot for amateur observers. At 26mm focal length, it delivers a genuine wide-field view through a 62-degree apparent field, giving you comfortable, immersive views of open clusters, nebulae, and the Moon without constantly nudging your mount to keep up with targets. The flat-field multi-element design keeps stars looking sharp across most of the field of view, which matters more than you might expect when scanning rich star fields.
One practical strength here is the argon-purged, waterproof construction. If you observe in humid or variable conditions, fogging internal elements is a real concern with cheaper eyepieces. This one handles that reliably. The fully multi-coated optics help squeeze out contrast and brightness, which is especially noticeable on fainter extended objects like galaxies.
The near parfocal design means less refocusing when swapping between eyepieces in a set, which keeps your sessions flowing smoothly. At $179.99 and weighing 0.70kg, it is a meaningful investment and worth checking balance implications on lighter mounts. With 33 Amazon reviews averaging 4.8 out of 5, user satisfaction appears consistently high, though the sample size is modest.
At a Glance
0.7kg
Weight
Specifications
Key Features
- 62-degree apparent field provides wide, immersive views well suited for star clusters and nebulae
- Argon-purged and waterproof construction protects against internal fogging in humid or damp conditions
- Fully multi-coated optics improve contrast and light transmission for better views of faint objects
- Flat-field design keeps stars sharp across most of the field, reducing edge distortion
- Near parfocal design reduces refocusing time when switching eyepieces during a session
- 26mm focal length works across a broad range of telescope types for general-purpose observing
- At 0.70kg, check your mount and focuser load capacity before purchasing
Customer Reviews
33 reviews
I use the eyepiece with a 6 inch refracting telescope, and I could not be more pleased. They are light in weight, have better than average eye relief, and yield sharp images across the entire field of view. More expensive eyepieces may give more eye relief and a wider field of view, but not better o...
Nice view. Very good as a low power finder. Stars sharp over most of the field of view. Can barely split double stars down to about 6 seconds using a 150mm Cassegrain telescope at about 60x magnification.
Beautiful eyepiece. My Orion XT8 came with only 1 eyepiece (a 25mm), so I wanted a shorter focal lenght to add more versatility and be able to get closer looks of the moon, split double stars and when the time is right also look at planets. The image is great, so is the eye relief, it feels well bui...