Astronomik UHC-E Filter

The UHC-E filter is designed to increase the contrast of nebulae and other deep-sky objects by blocking specific wavelengths of light associated with light pollution. This makes faint celestial structures stand out more clearly against the background sky, allowing you to see details that might otherwise be washed out.

The Astronomik UHC-E features a standard 1.25-inch mounting thread, which is the most common size for telescope eyepieces. It should screw directly into the barrel of almost any standard 1.25-inch eyepiece.

While many light pollution filters are broad-spectrum, the UHC-E is a high-contrast filter specifically optimized for nebulae. It offers a high peak light transmission of 94%, which helps keep the view bright while still effectively suppressing unwanted skyglow.

Yes, it is specifically designed to help in those conditions. By filtering out the specific wavelengths emitted by common streetlights, it helps darken the background sky, making it easier to observe nebulae even when you are not in a dark-sky location.

The 10-year warranty covers manufacturing defects and material failures under normal use. It does not typically cover accidental damage, such as drops or scratches to the glass surface, so you should handle the filter with care.