Explore Scientific 1.25" 2x Focal Extender

The Explore Scientific 1.25" 2x focal extender doubles the magnification of every 1.25" eyepiece you own while preserving eye relief and field performance. Built around a telecentric optical design with multiple precision lens elements, it keeps magnification consistent regardless of spacing in the optical path, which is critical for imaging setups with filter wheels or flip mirrors.

Key Features

• Four-element telecentric design, fully multi-coated with EMD coatings, for more consistent magnification than a standard Barlow
• Filter thread for color and nebula filters
• Doubles your effective eyepiece collection without buying additional eyepieces

Ideal For

• First-time extender buyers — the 2x factor is the most practical starting point, effectively turning three eyepieces into six focal lengths
• Planetary and lunar observing — push a comfortable 20mm eyepiece to 10mm-equivalent magnification with full eye relief
• Astrophotographers — telecentric design maintains consistent magnification through the imaging chain