All our other accessories -0.965" Filter P0067 Filter Telescope Filter Nebula Filter for Colored Planetary Observation Highlights generic brand 0.965" Filter P0067 Filter Telescope Filter Nebula Filter for Colored Planetary Observation Description: Nebula Filter 0.965 "for telescope eyepiece. Premium metal rim and glass lens. Fit standard size 0.965" eyepieces and accessories. The bright and polluted sky appears much darker and the contrast between the object and the sky is significantly improved. This contrast effect is particularly evident on nebulae. Reduces glare and improves definition so you can see moons features, craters and "seas" much more clearly. specification: Caliber: 0.965inch (24.5mm) Frame material: aluminum alloy Color: filter blue Weight: 6g Package includes: 1 piece 0.965" nebula filter