The Explore Scientific 3x Barlow Lens Extender is a component that triples the magnification of a telescope system for observing planets and the Moon. It works by inserting it between the telescope and an eyepiece, extending the focal length and achieving higher magnification, while also providing better image quality. These extenders often feature multi-element and multi-coating designs to correct aberrations.

• Suitable for optical observing and astrophotography
• Triples the active total focal length of the telescope
• Four-lens telecentric design
• Fully multi-coated