Svbony SV220 Dual Band filter(Choose Size)
Svbony SV220 Dual Band Filter The Svbony SV220 Dual Band Filter is an essential tool for astrophotography, specifically designed to reduce light pollution and enhance contrast for capturing stunning images of...
Svbony SV220
Dual Band Filter
The Svbony SV220 Dual Band Filter is an essential tool for astrophotography, specifically designed to reduce light pollution and enhance contrast for capturing stunning images of emission nebulae, planetary nebulae, and supernova remnants. Available in various sizes, this filter is a must-have for astrophotographers aiming for high-quality imaging even in light-polluted environments.
Key Features:
- Effective Light Pollution Reduction: Drastically minimizes interference from moonlight, sodium vapor, mercury vapor streetlights, and natural sky glow.
- Dual Narrow Bandwidth: Designed with 7nm H-Alpha (red) and OIII (green-blue) narrowband filtering for isolating nebula emissions while blocking unwanted light.
- Astrophotography-Optimized: Enables high-contrast imaging of deep-sky objects, even in areas with strong artificial light pollution.
- Enhanced Contrast: Increases the contrast between nebulae and the sky background, making details of gaseous and planetary nebulae more distinct.
- Versatile Compatibility: Suitable for use with SVBONY electronic and astronomical cameras for capturing high-detail images of emission nebulae and related celestial objects.
- Strong Applicability: Ideal for imaging in various sky conditions while eliminating artificial and natural light interference.
Additional Notes:
- Not recommended for use with telescopes having a focal ratio below F/5.
- Perfect for imaging emission nebulae, planetary nebulae, and supernova remnants by maximizing signal and enhancing image details.
The Svbony SV220 Dual Band Filter is the ultimate solution for astrophotographers seeking exceptional performance, vivid contrast, and reduced light pollution, enabling you to reveal the beauty of deep-sky objects with unparalleled clarity.
Specifications
Brand | SVBONY | SVBONY |
Model | SV220 | SV220 |
Name | Duo-Band OSC Filter | Duo-Band OSC Filter |
Size | 2-Inch | 1.25-Inch |
Substrate Thickness | 1.80mm | 1.85mm |
Clear Aperture | 44mm | 26mm |
Wavelength Range | 300-1100nm | 300-1100nm |
FWHM | OIII (7nm) & HA (7nm) | OIII (7nm) & HA (7nm) |
Blocking | OD5 | >OD5 |
Peak transmittance | 500.7nm@T>90%; 656.3nm@T>94% | 500.7nm@T>90%; 656.3nm@T>94% |
Surface Quality | 60/40 | 60/40 |
Surface parallelism | 1/4λ | 1/4λ |
Thread | M48x0.75 | M28.5*0.6 |
Single Thread | Yes | Yes |
Net Weight | 12.5g / 0.44oz /0.027lb | 7g |
Size |
2", 1.25" |
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