Zoom Telescope Eyepiece 7-21mm Focal Range For Astronomy, 15mm Eye Relief, 40 To 57 Degree Field Of View, 1.25 Inch Barrel, 5 Elements In 3 Groups, Crisp Lunar And Planetary Detail For Your Night Sky
✔️ 7-21mm zoom range, 15mm eye relief, 40-57° FoV, 1.25in barrel
This zoom eyepiece is a universal 1.25 inch accessory designed for astronomy. It provides a 7-21mm focal length range, enabling high magnification for planets and subtle lunar features or wide views at lower magnification for landscape skyscapes. The 5 elements in 3 groups and multi-coated optics deliver sharp, high-contrast images while the durable matte black aluminum shell keeps it portable for field use.
✅ 7-21mm focal length zoom range for planetary detail and wide-field viewing
✅ 15mm eye relief for glasses wearers
✅ 40°-57° field of view for comfortable observing
✅ 1.25 inch barrel compatible with standard telescopes
✅ 5 elements in 3 groups for sharp, high-contrast images
✅ multi-coated optics reduce glare and boost contrast
💡 What is a zoom telescope eyepiece used for in astronomy viewing?
This handy tool lets you quickly switch focal length to shift from close planetary detail to wide sky scans with minimal gear changes.
- On the fly magnification changes without swapping eyepieces
- Fits 1.25 inch telescope fittings for broad compatibility
- Coated optics boost light transmission and image contrast
- Compact, durable design ideal for field use