Parfocal 8-20mm Telescope Eyepiece Aspherical Optics

Elevate your stargazing experience with this versatile 8-20mm zoom telescope eyepiece. Designed for both planetary and deep-sky observation, it offers a wide-angle view, precise optics, and smooth parfocal zooming—eliminating the need to switch eyepieces while exploring the night sky.

Key Features

• Continuous 8–20mm Zoom: Covers a wide magnification range for detailed observation without changing eyepieces.

• Parfocal Design: Maintains focus across the zoom range, reducing interruptions during observation.

• Aspherical Lens: Eliminates edge distortion for sharp, clear images across the entire field.

• Panoramic Wide Angle: 57°–72° view for immersive and comfortable stargazing.

• Dual Interfaces: Includes 1.25” and 2” mounts for compatibility with a variety of telescopes.

• Click-Stop Zoom: Lock your desired magnification for consistent viewing.

• Long Eye Relief: 17–19mm for comfortable use, even with glasses.

• Fully Multi-Coated Lenses: Maximizes light transmission for brighter and more detailed images.

• Stainless Steel Barrel: Durable, corrosion-resistant construction for long-lasting use.

• Astigmatic Corrector Support: Enhances clarity and reduces visual distortions.

Specifications

• Focal Length: 8–20mm

• Field of View: 72°

• Exit Pupil Distance: 17–19mm

• Lens Groups/Elements: 6/9

• Barrel Material: Stainless Steel

• Parfocal: Yes

• Zoom Ratio: >2×

• Weight: 500g / 17.66oz

• Outer Diameter: 60mm

• Interfaces: 1.25” & 2”

Package Contents

• 2 × 8–20mm Zoom Telescope Eyepiece

What Makes This a Smart Buy:
This eyepiece combines wide-angle clarity, continuous zoom, and parfocal convenience in a single tool. Perfect for amateur and experienced astronomers alike, it allows you to capture sharp, distortion-free views of planets, stars, and deep-sky objects without constantly switching lenses—maximising both comfort and performance.