ZWO 31.75mm Duo-Band Filter - ZWO
ZWO 31.75mm Duo-Band Filter - ZWO
SKU: zwo-zwdb1.25
Available in 7 days
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Optimize your astrophotography with the ZWO 31.75mm Duo-Band filter. This versatile filter combines two filtration bands, H-Alpha and O-III, providing high transmission for sharp and detailed images of nebulae. Ideal for rejecting light pollution and enhancing contrast in your astronomical captures.
- H-Alpha and O-III filtration with narrow bandwidth
- Minimum transmission of 90% in characteristic emission lines
- CNC machined aluminum cell for increased precision and durability
- Available in 31.75mm and 50.8mm sizes
- 1.85mm thick Schott glass with double-sided anti-reflective coating
- Effectively reduces light pollution for clearer images
- 2-in-1 solution decreasing the need for multiple separate filters
- High compatibility with CMOS and CCD cameras for great flexibility
- Simplified installation due to compact and precise design
- Rejects a wide range of light pollutants, improving image quality
- Compatible with DSLR, CMOS and color CCD cameras
- Not compatible with wide-angle and ultra-wide-angle lenses (maximum incidence angle of 8°)
- Ensure that incident radiation hits the filter perpendicularly to maintain optimal transmission
- Use this filter with focused lenses to avoid performance degradation due to high incidence angles
- Store the filter in its supplied protective case when not in use to avoid scratches and other damage




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