1.25/2inch/EOS-C CLS City Light Pollution Suppression Broadband Filters for Deep Sky Visual Astronomical Photography

1.25/2inch/EOS-C CLS City Light Pollution Suppression Broadband Filters for Deep Sky Visual Astronomical Photography

Name: 1.25/2inch/EOS-C CLS City Light Pollution Suppression Broadband Filters for Deep Sky Visual Astronomical Photography
Brand: Svbony
SKU: F9155B
Price: 38.07 USD
Availability: InStock
Rating: 5 (2 reviews)

2 | Reviews

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Key Features

Durable and Scratch-Resistant Coating

Utilizing electron beam gun evaporation with Ion-assisted deposition coating technology, this filter offers superior durability and scratch resistance, ensuring long-lasting performance without degradation, even under demanding conditions.

High Transmission for Nebula Emission Lines

The filter achieves 90% transmission for key nebula emission lines (e.g., Ha 656nm, OIII 496nm, SII 672nm, and H-beta 486nm), making it ideal for observing and capturing deep-sky objects with enhanced clarity and detail.

Precise and Homogeneous Coating

The planetary rotation system ensures precise coating with excellent homogeneity, providing consistent performance and high transmission of pass-band wavelengths, while maintaining optical density in off-band regions.

Effective Light Pollution Suppression

With 0.1% transmission of off-band wavelengths, this filter effectively blocks harmful artificial light pollution (e.g., Na 589nm, Hg 435nm, and 578nm), enhancing the contrast of celestial objects for clearer, more detailed imaging.

Ideal for CCD and DSLR Cameras

Perfect for use with color CCD cameras and unmodified DSLR cameras, the filter is specifically designed to suppress urban light and improve the contrast of your target objects, making it essential for urban astrophotography.

Size: 2inch

2inch

1.25inch

EOS-C

In Stock

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Model	F9155A	F9155B	F9155D
Size	1.25‘’	2‘’	EOS-C
Thread	Standard M28.5*0.6	Standard M48*0.75	Canon EOS-C
thickness	1.85mm	1.85mm	1.85mm
Type	City Light Suppression Filter (CLS Filter)

1. The SVBONY City Light Suppression broadband filter is designed to improve the visibility of various Deepsky objects. By selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lightings including mercury vapor lamps, both high & low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow)

2. Together with the highly transparent in main nebula emission lines at OIII(496nm and 500nm), H-beta (486nm), NII(654nm and 658nm), H-alpha(656nm) as well as SII(672nm), the Svbony CLS filter is suitable for enhancing the contrast and details for both visual and photographic purpose at sub-rural area

3. Light pollution filter do not eliminate the effects of light pollution or increase the object's brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula

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