SVBONY SV220 1.25" 3 nm H-Alpha & OIII Dual Narrowband Filter – W919

The SVBONY SV220 1.25" 3 nm H-Alpha & OIII Dual Narrowband Filter is designed for high-contrast deep-sky astrophotography. Featuring an ultra-narrow 3 nm bandwidth, this filter precisely isolates H-alpha (656.3 nm) and OIII (500.7 nm) emission lines while aggressively suppressing artificial light and skyglow. Optimized for one-shot color astronomy cameras, it enables detailed nebula imaging without the need for multiple narrowband filters.

Why Choose the SV220 3 nm Dual Narrowband Filter

The SV220 3 nm filter delivers exceptional contrast and background suppression, allowing astrophotographers to capture detailed nebula images even under challenging light conditions. Its efficiency and compatibility with color cameras make it a powerful upgrade for deep-sky imaging.

Key Features

• Ultra-Narrow 3 nm Bandwidth: Maximizes contrast and signal-to-noise ratio

• Dual Emission Line Transmission: H-alpha and OIII isolation

• Enhanced Nebula Detail: Reveals faint structures and fine emission regions

• Optimized for Color Cameras: Ideal for OSC astrophotography workflows

• Strong Light Pollution Suppression: Suitable for urban and suburban imaging

• Multi-Coated Optical Glass: High transmission with reduced reflections

• 1.25-Inch Standard Format: Compatible with filter wheels and camera adapters

Specifications

• Model: SV220

• Filter Type: Dual narrowband (H-Alpha + OIII)

• Bandwidth: 3 nm

• Filter Size: 1.25 inch

• Optical Coatings: Multi-coated

• Glass Type: Optical glass

• Thread Standard: M28.5 × 0.6

• Primary Use: Emission nebula astrophotography

• Recommended Cameras: One-shot color CMOS astronomy cameras

• SKU: W9198A