$499.00

Anti-Halo PRO Dual-Band 2″ Ha+OIII filter Frame thickness: body 5mm+ thread 2.5mm, a total of 7.5mm Filter glass thickness: 1.85mm Ha CWL: 656.3nm      Band Width: 3.7±0.5nm OIII CWL: 500.7nm     Band Width: 3.2±0.5nm Transmittance: >=85% Blocking depth: OD5 (200-1100nm)   In recent years, not only the single narrowband filters are chasing narrower band width, but also … Continue reading Anti-Halo PRO Dual-Band 2″ Ha+OIII filter

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