2 Inch Dual-Band 7nm SII OIII Nebula Filter

Capture stunning deep-sky images with this 2-inch dual-band SII/OIII nebula filter. Designed for One-Shot Color cameras, it isolates key emission lines while minimising light pollution, allowing you to reveal intricate details of nebulae, planetary nebulae, and supernova remnants.

Ideal for amateur astrophotographers, it enhances contrast and brings out vibrant colour in emission nebulae even under bright urban skies.

Key Features

• Dual 7nm Narrowband SII/OIII – Isolates essential emission lines for sharper images

• Minimises Light Pollution – Capture clear nebulae in moonlit or city-lit skies

• Single-Shot Color Compatible – No need to combine multiple filters

• High Transmission & Sharp Cut-Off – Maximises contrast for deep-sky objects

• Optimized for One-Shot Color Cameras – Perfect for DSLR, CMOS, and CCD sensors

• Durable 2-Inch Design – Fully threaded and 44mm clear aperture

• Enhances Emission Nebulae Details – Bring out the finest structures and colour

Specifications

• Size: 2 inch (50.8mm)

• Substrate Thickness: 1.85mm

• Clear Aperture: 44mm

• Wavelength Range: 350–1100nm

• Blocking: >OD5

• Peak Transmittance: 500.7nm@T>85%, 672nm@T>80%

• Surface Quality: 60/40

• Surface Parallelism: 1/4λ

• Thread: M48x0.75 (Single Thread)

• Net Weight: 13g

Package Contents

• 1 x 2" 7nm SII OIII Dual-Band Filter

• 1 x PP Plastic Box

What Makes This a Smart Buy:
This filter dramatically improves astrophotography in light-polluted environments, delivering high-contrast, detailed nebula images in a single shot. It’s a practical, long-lasting tool for capturing deep-sky wonders with ease.