ZWO 5-Position EFW (5x2") 2025 Astro Days Compatible with:

Compatible with:

the 8" Dobsonian has 240+% more light gathering area

6 Field Stop (mm) 46

the rubber eyecup positions the users eye behind the eyepiece at the correct distance for optimal viewing

Measures over 5” high

ZWO 5-Position EFW (5x2") 2025 Astro Days Compatible with:The Next Generation ZWO EFW Refined Design Anti Light Leak Protection Built for Astrophotography A re engineered internal design helps reduce light leakage, while the refined mechanics deliver smoother, more consistent rotation. The exterior has been subtly streamlined, giving the wheel a cleaner and more cohesive look. Nothing dramatic. Just better in the ways that matter so your imaging workflow stays steady, reliable, and quietly improved. The ZWO