Astrophotography 2 Inch Duo-Band Filter Ha OIII

This duo-band filter is designed to enhance hydrogen and oxygen emission lines, making it easier to capture vivid nebula detail even under light-polluted skies. A great choice for astrophotographers using colour cameras.

Key Features

• Duo-band filtering for Ha and OIII wavelengths

• Darkens sky glow while boosting object contrast

• Reveals fine star and nebula structures

• High transmittance ensures bright, sharp results

• Ideal for urban and suburban astrophotography

• Precision-polished optical surface for image clarity

• Fits standard 2-inch telescope and camera systems

Specifications

• Filter size: 2 inch

• Target wavelengths: Ha and OIII

• Peak transmittance: Over 90%

• Optical thickness: Approx. 2mm

• Barrier range: 200–1000nm

• Surface finish: 60/40

• Chemical safety: No high-concern chemicals

Package Contents

• 1 x 2 Inch Duo-Band Astrophotography Filter (Ha OIII)

• Protective Storage Case

What Makes This a Smart Buy:
By enhancing key nebula emission lines, this filter delivers dramatic improvements in contrast and detail, helping you achieve striking deep-sky images with less post-processing.