Astromania 2 inch O-III Filter for Nebulae Observation - Glass, Enhanced Contrast Lighting & Studio Gear Features: 1)All The 7X5Ft And8X6Ft

Features: 1)All The 7X5Ft And8X6Ft 10X8Ft Backdrop Are 1 Piece

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It features a foldable plug for portability

The Housing Is Fully Shielded To Avoid Corrosion And To Protect From Emi (Electromagnetic Interference)

Astromania 2 inch O-III Filter for Nebulae Observation - Glass, Enhanced Contrast Lighting & Studio Gear Features: 1)All The 7X5Ft And8X6FtThe Astromania 2 inch O III Filter is a specialized narrowband optical filter designed to significantly enhance the contrast of diffuse, planetary, and extremely dim nebulae for both visual observation and astrophotography. This filter isolates the two doubly ionized oxygen lines (496nm to 501nm) emitted by nebulae, blocking most other wavelengths to create a blackened background of space. This makes faint objects like the Veil, Ring, Dumbbell, and