H-Alpha Filter 7nm ZWO 31,75mm

Improve your images with the ZWO H-Alpha 7nm filter. Specifically designed for deep sky imaging, this narrowband filter optimizes the capture of H-alpha emissions, offering exceptional quality images while reducing unwanted light interference.

Characteristics:
• 7nm (FWHM) passband centered at 656nm
• 90% transmission on the H-Alpha line
• Cutoff in infrared (700-1100nm)
• Made of 1.85mm thick Schott glass
• Double-sided optical coating with anti-reflection treatment
• CNC machined aluminum cell for increased precision
• Available in 4 formats: 31.7mm, 50.8mm, 31mm and 36mm unmounted circular

Advantages:
• Capture fine details of hydrogen nebulae with high contrast
• Significant reduction of urban lighting and Moon effects
• Easy integration with O-III and S-II filters for "Hubble-like" images
• Robust and precise construction ensuring optimal durability and performance
• Simple installation without recalculating the backfocus thanks to intuitive design

Compatibility:
• Ideal for CCD imaging and modified digital cameras
• Compatible with optical systems using full-format and medium-format sensors
• Works perfectly in combination with ZWO's O-III and S-II filters

Tips and Tricks:
• Combine this filter with the O-III and S-II filters to enrich your images with natural colors
• Use a stable and well-balanced mount to minimize vibrations during long exposures
• Regularly clean the filter with suitable materials to maintain optimal transmission