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Title: SVBONY 2‑Inch Narrowband H‑Alpha 7 nm Filter  
Category: Optical Filters  
Brand: SVBONY  
Description: A high‑performance 7 nm bandwidth H‑Alpha filter designed for deep‑sky astrophotography.  
Details: Features 85 %+ peak transmission at 656 nm, double‑coated anti‑reflection, aluminum alloy frame, and double‑layer EVA damping for reduced light pollution interference.

Price is $