Oxygen-III Filter

This filter is an absolute must-have if diffuse and planetary nebulae are on your viewing wish-list. The Zhumell Oxygen-III Filter reveals the details of deep sky nebulae without degrading image sharpness. Available in both 1.25-inch and 2-inch format, our O-III filter is excellent for observing Veil, Lagoon, Swan, Ring and Dumbbell nebulae where many emissions are in the doubly ionized oxygen range.

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