- SVBONY Sulfur II 7nm Extra Narrowband Filter transmits a 7nm bandwidth of light that is centered at 672nm and drastically reduces other transmissions; including wavelengths of light that are responsible for light pollution
- Quality lens material;The SVBONY 2inch filters are made with Schott glass that has been multi-coated with an ion-assisted deposition technology to ensure scratch resistance and stability on the central wavelength or CWL
- Rugged metal frame;The SVBONY filter cell is made of lightweight; strong metal and is CNC machined; sand-blasted; black anodized; and then laser engraved
- Standard 2-inch thread size; Metal filter cell threads directly into the 2- inch barrel of your telescope eyepiece
- SVBONY 2inch SII-CCD filter is for the astrophotography; lets you increase the contrast when photographing deep sky objects; It stands out better against the night sky background; letting you see detail that was not apparent before
SVBONY SV160 2" SII Filter 7nm Narrow-Band for CCDs
Specifications
| Type | SII Filter |
| Size | 2-Inch |
| T peak | 80% |
| Transmission Line Wavelength | 672nm |
| Infrared wavelength | 700-1100nm cut-off |
| 0.1% transmission Hg | at 435nm and 578nm |
| 0.1% transmission Na | at 589nm |
| Wavelength Range | 300-1000nm |
| Blocking | OD3 @300-1000nm |
| Clear Aperture | 45mm |
| Surface Quality | 60/40 |
| Surface parallelism | 1/4λ |
| Surface parallelism | 1/4λ |
| Parallelism | 30" |
| Glass Thickness | 1.85mm |
| Machined | CNC machined |
| Thread | M48*0.75 |
Features
1. Sulfur II 7nm Extra Narrowband Filter transmits a 7nm bandwidth of light that is centered at 672nm and drastically reduces other transmissions; including wavelengths of light that are responsible for light pollution
2. Quality lens material;The SVBONY 2inch filters are made with Schott glass that has been multi-coated with an ion-assisted deposition technology to ensure scratch resistance and stability on the central wavelength or CWL
3. Rugged metal frame;The SVBONY filter cell is made of lightweight; strong metal and is CNC machined; sand-blasted; black anodized; and then laser engraved
4. Standard 2-inch thread size; Metal filter cell threads directly into the 2- inch barrel of your telescope eyepiece
5. SVBONY 2inch SII-CCD filter is for the astrophotography; lets you increase the contrast when photographing deep sky objects; It stands out better against the night sky background; letting you see detail that was not apparent before
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