New 1.25-in Narrowband Filter Ha 7nm

The ZWO Hydrogen Alpha (Ha) Filter in the 1.25″ size is a must-have for astrophotographers looking to capture stunning images of hydrogen emission regions in nebulae. This filter is designed with high-quality materials and anti-reflection coatings to block all other wavelengths of light except for the Ha wavelength (656nm), enhancing contrast and detail in your images. The 1.25″ size is compatible with a wide range of telescopes and cameras, and the filter has a bandpass of 7±0.5nm FWHM. It is fine-optically polished to ensure accurate 1/4 wavefront over both surfaces, and has about 90% transmission at the H-alpha line (656nm). It has an infrared wavelength 700-1100nm cut-off and <0.1% transmission of off-band, OD3 (Optical Density). The filter comes in a protective case for safe storage.

Features:

• Isolates the Ha wavelength (656nm) for enhanced contrast and detail in astrophotography
• Blocks all other wavelengths of light for improved image quality
• High-quality materials and anti-reflection coatings for excellent optical performance
• Compatible with a wide range of telescopes and cameras
• 7±0.5nm FWHM bandpass for precise filtering
• Fine-optically polished to ensure accurate 1/4 wavefront over both surfaces
• About 90% transmission at the H-alpha line (656nm)
• Infrared wavelength 700-1100nm cut-off
• <0.1% transmission of off-band, OD3 (Optical Density)
• Comes in a protective case for safe storage