Designed for deep-sky imaging, this 2-inch duo-band filter helps bring out fine nebula detail while reducing the impact of light pollution. It’s ideal for astrophotographers who want clearer contrast and richer detail using colour cameras.
Key Features
Duo-band design targets SII and OIII emission lines
Improves contrast by darkening sky background
Enhances nebula structure and fine star detail
High light transmission for brighter, cleaner images
Helps reduce urban light pollution interference
Precision optical glass for consistent imaging results
Compatible with 2-inch telescope and camera setups
Specifications
Filter size: 2 inch
Target wavelengths: SII 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 Astronomy Filter (SII OIII)
Protective Storage Case
What Makes This a Smart Buy:
This filter unlocks extra nebula detail that colour cameras often miss, making it a powerful upgrade for deep-sky imaging without moving to complex multi-filter setups.
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