Narrowband Filter 7nm SII & OIII SV220 2inch | Svbony
2 | ReviewsKey Features
- Dual Narrowband Precision
- Enhanced Deep‑Sky Contrast
- Efficient OSC Camera Use
- Light Pollution Suppression
- Ideal for Nebula Targets
SV220 2inch 7nm SII+OIII Dual-Band Filter
The SV220 SII & OIII 7nm is a Duo Band Filter. It is designed to be used in combination with the SV220 H-Alpha & OIII Duo Band Filter to provide a superior method for achieving the SHO (Hubble Pallet) narrow band colour balance with colour imaging cameras. The SII and OIII Filter provides the missing band data so that owners of colour cameras can achieve the SHO colour balance in their narrow band images. The Duo-band filter (SII+OIII) has a high transmission of over 85% at its center wavelength (500.7nm and 672nm). It can effectively improve the quality of the image by making the sky background of the image darker while maximizing contrast throughout the image and enhancing the contrast of your pictures, thus making it easier to display the details of the stars. In areas with very serious light pollution, this filter can also selectively filter light pollution.
SV220 2inch 7nm SII+OIII Dual-Band Filter
The SV220 SII & OIII 7nm is a Duo Band Filter. It is designed to be used in combination with the SV220 H-Alpha & OIII Duo Band Filter to provide a superior method for achieving the SHO (Hubble Pallet) narrow band colour balance with colour imaging cameras. The SII and OIII Filter provides the missing band data so that owners of colour cameras can achieve the SHO colour balance in their narrow band images. The Duo-band filter (SII+OIII) has a high transmission of over 85% at its center wavelength (500.7nm and 672nm). It can effectively improve the quality of the image by making the sky background of the image darker while maximizing contrast throughout the image and enhancing the contrast of your pictures, thus making it easier to display the details of the stars. In areas with very serious light pollution, this filter can also selectively filter light pollution.
Customer Reviews
Jesse Snelson
Jan 04, 2026
Didn’t know they made a Sii Oiii filter, when I saw they did, decided to try it out, glad I did, was blown away with the results I got compared to other Sii Oiii filters, paired this with the 220 Ha Oii filter and I was very impressed with my final SHO images
Martin.
Dec 08, 2025
I am very impressed with this filter. The quality is very good and even in heavily light pollution areas it performs outstandingly.
| Model | SV220 |
| Name | SII & OIII Duo-Band OSC Filter |
| Size | 2-Inch |
| Substrate Thickness | 1.85mm |
| Clear Aperture | 44mm |
| Wavelength Range | 300-1000nm |
| FWHM | 7nm |
| Blocking | ≥OD5 |
| Peak transmittance | ≥88% |
| Surface Quality | 60/40 |
| Surface Parallelism | 1/2λ |
| Thread | M48x0.75 |
| Single Thread | Yes |
| Net Weight | 15-20g |
