Svbony 1.25'' Oxygen III 7nm extra narrowband filter transmits a 7nm bandwidth of light that is centered at 500nm and drastically reduces other transmissions, including wavelengths of light that are responsible for light pollution(both artificial and natural).
| Model | SV160 |
| Size | 1.25-inch |
| Type | OIII filter |
| Wavelength Range | 300-1000nm |
| CWL | 500nm |
| FWHM | 7nm |
| Surface Quality | 60/40 |
| Surface Parallelism | 1/4λ |
| parallelism | 30° |
| T peak | 80% |
| Substrate | B270 |
| Substrate Thickness | 1.85mm |
| Blocking | OD3 @300-1000nm |
| Clear Aperture | 26mm |
| Net Weight | 5.5g/0.19oz |
The SVBONY 1.25" Filters are made of glass import from Germany that has been multi-coated with an ion-assisted deposition technology to ensure scratch resistance and stability on the central wavelength, or CWL. The filter cell is made of lightweight, strong metal and is CNC machined, sand-blasted; black anodized, and then laser engraved. The result is a super thin filter cell that will produce a clear aperture of 26mm.
The Oxygen III 7nm Extra Narrowband Filter transmits a 7nm bandwidth of light that is centered at 500nm and drastically reduces other transmissions, including wavelengths of light that are responsible for light pollution (both artificial and natural). Like all Svbony filters that are designated as "CCD", this OIII also blocks infrared wavelengths from 400nm to 700nm so you don't need a separate IR-Cut filter.