Zoom Eyepiece 7-21mm for Astronomic Telescopes

This zoom eyepiece offers a focal length range from 7mm to 21mm, providing versatile viewing options for astronomical observations. It features a 1.25-inch barrel and is designed with six lens elements arranged in four groups to deliver clear, sharp images. The eyepiece is compatible with various telescopes and is suitable for both planetary and deep-sky viewing. Included with the eyepiece is a dielectric mirror star diagonal, which enhances image brightness and contrast. The adjustable zoom allows for smooth transitions between different focal lengths, making it easy to find the perfect view of celestial objects. Its construction aims to provide reliable performance and ease of use for amateur astronomers and enthusiasts alike.