Best Explore Scientific Telescope Eyepieces in 2026

Fully Waterproof and Gas Purged

11mm focal length, 82 Degree Apparent Field of View

All internal surfaces/edges are flat black

Focal Length 24mm

Length 75.6mm Width 56.2mm Weight 11.6oz; 329g

Barrel Size 1.25"

Focal Length 40mm

Length114.2 mm Width 80.3mm Weight 35.2oz; 998g

Barrel Size 2.00"

Waterproof Argon Purge

3" Barrel

Huge apparent field of view not only gave the observer a panoramic visual experience, but they relax the eye so the observer could pay attention to subtle details for extended periods.

Doubles Optical Enhancement

Barrel Size: 2.0 Inches

Length: 118MM

Coatings: EMD (Enhanced Multi-Layer Deposition) on all lens-to-air surfaces

Filter Thread: Fits Standard 1.25 inch Diameter Thread in Filters (1.125 inches x 42 TPI)

Waterproof: O-Ring Sealed Argon Gas Purged; Tested Under 1 Meter of Water for 30 Minutes

he Explore Scientific 62° Series eyepieces are excellent flat-field multi-element oculars that can transform your visual astronomy experience.

field of view of 62 degrees and near par focal design, these eyepieces offer incredible value in a very nice eyepiece.

The design of these eyepieces allows for averted vision which allows you to see fainter images

Large eye distance and great image sharpness

Excellent viewing position for people with glasses

Excellent field sharpness even with fast optics

The Explore Scientific 120° 9 mm Eyepiece is Argon Purged for an increased life span

With 13 mm of eye relief the Explore Scientific Eyepiece is comfortable to view through

At a Focal Length of 9 mm the Explore Scientific Eyepiece is a great high to mid power eyepiece

North and South Polar reference markings for quick and precise polar alignments with any equatorial mount

Illuminated eyepiece with variable brightness

Quick release bracket. Base for bracket compatible with Explore Scientific telescopes sold separately.

Unique combination of excellent edge sharpness, even in fast optics and huge field of view.

The patented EMD coating in conjunction with internal bezels ensures high contrast and prevents annoying reflections.

The argon filling effectively prevents fogging from the inside and you don't need to be afraid of dust, glass fungus or the ingress of cleaning fluid.

Huge apparent field of view not only gave the observer a panoramic visual experience, but they relax the eye so the observer could pay attention to subtle details for extended periods.

Each 100° Series Argon-Purged Waterproof eyepiece is internally sealed and purged with inert, dry argon gas.

Every 100° eyepiece is tested by submerging them down to 1 meter of water for 30 minutes.

52 Degree Series 3mm Waterproof Eyepiece (1.25 ") - 2x Caps - Explore Scientific 1 Year Limited Warranty (Lifetime Warranty with Registration within 60 Day of Purchase)

Focal Length: 3mm

Barrel Diameter: 1.25"