CH4 8nm 1"25
Player One E-series is an upgrade series of S-series, using high quality optical glass substrate and multi-layer composite coating technology, producting with higher standard than S-series, optimized for CMOS/CCD camera, can provide very professional effect in astrophotography.

Fetaures
- Specifications: 1.25 inch, thread M28.5*0.6
- Frame thickness: body 5mm+ thread 2.5mm, a total of 7.5mm
- Thickness of filter lens: 2.5mm
- Bandwidth: 8nm
- CWL (center wavelength):889nm
- PV: 1/4 lambda
- Transmittance: ≈90%
- Blocking depth: OD4
