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2" O-III Narrowband Filter Beta 2961178 6.5 nm for Astrophotography
Summary description:
2-inch O-III narrowband filter Beta 2961178 with 6.5 nm bandwidth designed for astrophotography and visual use. It transmits doubly ionized oxygen emission lines while reducing background light, improving contrast of nebulae and faint oxygen-rich targets. Suitable for use in 2" filter holders on telescopes and CCD/CMOS imaging systems.