SVBONY 1.25-Inch CLS Filter for Deep Sky Astronomical Photography and Visual Observation

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SVBONY: Exploring the Wonders of Astronomy and Sports Optics

SVBONY is a young and passionate team dedicated to creating innovative astronomy and sports optics products. Since 2014, our team has been committed to R&D, developing practical optical solutions for those who seek to explore nature and the vast expanse of space.

Our product lineup includes Astronomy Telescopes, Astronomy Cameras, Astronomy Accessories, Microscopes, and more. We sincerely hope that under the SVBONY influence, more people will fall in love with the captivating beauty of the starry sky.

What Sets Our Products Apart?

Behind the SVBONY brand is a team of creative, collaborative, and responsible individuals. We've carved out a niche by focusing on creating products that allow people to see more realistic images in their original form, rather than simply upgrading the camera on a smartphone.

Why We Do What We Do?

We believe that optics products are practical and educational, connecting people to the world around them. SVBONY aims to lead us to a more beautiful world that is often hidden from view, and we are dedicated to bringing this beauty to everyone.

CLS Light Pollution Reduction Filter for Deep-Sky Observation

The SVBONY City Light Suppression (CLS) Broadband Filter is designed to improve the visibility of deep-sky objects by selectively reducing the transmission of wavelengths associated with light pollution. This includes the emission lines from mercury vapor lamps, high and low-pressure sodium vapor lights, and the unwanted natural light caused by neutral oxygen emission in our atmosphere, such as sky glow.

Key Features:

• Aerometal material with precise CNC machining and sand blasting process for a black anodized finish
• Planetary rotation system offers precision and homogeneity of coatings, ensuring high transmission of pass-band and optical density of off-band
• 90% transmission of main nebula emission lines (i.e., Hα 656nm, OIII 496nm & 500nm, SII 672nm, and Hβ 486nm)
• 0.1% transmission of off-band emission lines, including Na 589nm, Hg 435nm, and 578nm
• Compatible with color CCD cameras and unmodified DSLRs
• Suitable for enhancing contrast and capturing more details in both visual and photographic observations, particularly in sub-rural areas.

Warning: The SVBONY filters are not designed for direct sun observation. Do not look directly at the sun with these filters, as it may result in eye damage.

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