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)
