Astronomik CLS CCD Filter

Yes, the CLS CCD filter is specifically engineered to suppress the emission lines of common artificial light sources like mercury and sodium-vapor streetlights. While it won't eliminate all light pollution, it significantly improves contrast, allowing you to see faint nebulae and galaxies that would otherwise be washed out.

Absolutely. While it is a powerful tool for deep-sky astrophotography, it also works exceptionally well for visual observation, helping to darken the background sky and make celestial objects pop.

The 31mm round mounted format is a standard size designed to fit into most filter wheels or filter drawers. Before purchasing, ensure your specific filter wheel or drawer is compatible with 31mm unmounted or mounted filters to ensure a proper fit.

Because the filter blocks specific wavelengths of light, it will shift the color balance of your images. You will likely need to perform color correction during your post-processing workflow to restore natural-looking colors.

The 'CCD' designation indicates that this filter includes an integrated IR-blocker. This is essential for modern digital cameras, as it prevents infrared light from reaching your sensor, which would otherwise cause bloated stars and reduced image sharpness.

The 10-year warranty covers manufacturing defects and material failures under normal use. It does not cover accidental damage, such as scratches or drops, so it is important to handle and store the filter carefully in its protective case when not in use.