Sky-Watcher UltraWide 9mm Eyepiece

9mm UltraWide Eyepiece. This Sky-Watcher 9mm Ultra-Wide Angle, Multi-Coated, Long Eye Relief eyepieces offer a generous 66º apparent field of view and an eye relief of 15mm. It provides crisp, sharp images right across the field. Rubber eyepieces are included for viewing comfort and to exclude extraneous light. Available in 6mm, 9mm, 15mm and 20mm focal lengths.