SVBONY SV220 Telescope Filter - 1.25 inches Dual-Band Nebula Filter for Astrophotography

The SVBONY SV220 Dual Band Filter is a versatile and efficient tool for astronomers who are already using color cameras for astrophotography and do not wish to transition to a monochrome camera setup. This filter is designed to address the growing issue of light pollution, which has become increasingly prevalent in many areas.

The SV220 filter boasts a relatively wide bandpass, particularly at the OIII wavelength (500.7nm width), providing enhanced contrast and visibility of deep-sky objects such as emission nebulae. This feature is especially beneficial for astrophotographers who are capturing images in areas affected by light pollution.

One of the key advantages of the SV220 filter is its compatibility with a wide range of cameras and filter wheels. The 1.25-inch dual-band filter can be used with most astronomical cameras, ensuring a seamless integration with your existing equipment. This versatility eliminates any concerns about the filter not being applicable to your specific setup.

The filter's design also provides an increase in contrast, which can be perceived as an increase in brightness. This feature enhances the visibility of nebulae and the sky background, resulting in high-contrast imaging even in areas with strong light pollution.

In terms of technical specifications, the SV220 filter has a substrate thickness of 1.85mm, a clear aperture of 26mm, and a wavelength range of 300-1100nm. The filter's FWHM (Full Width at Half Maximum) is 7nm for both the OIII and HA wavelengths, ensuring a targeted and efficient filtration of the desired wavelengths.

The filter's surface quality is rated at 60/40, and its surface parallelism is 1/4λ, ensuring high-quality optical performance. The filter is threaded with an M28.5*0.6 thread, and it weighs a mere 40g, making it easy to handle and install.

Overall, the SVBONY SV220 Dual Band Filter is a valuable tool for astrophotographers and visual observers alike. It provides a practical solution for reducing the impact of light pollution, enhancing the contrast and visibility of deep-sky objects, and simplifying the post-processing workflow for users. Its compatibility with a wide range of cameras and its ease of use make it a compelling choice for astronomers seeking to improve their imaging and observing experiences.

product information: