- Product Size: UHC filter with a diameter of 3.18 cm. - Enhance Your Astronomy Experience: The UHC filter is designed to significantly improve image contrast, reducing the impact of urban light pollution. This allows for clearer and more detailed astronomical observations, making your stargazing sessions more enjoyable. - User-Friendly Design: Featuring a British thread standard, this high-contrast filter easily attaches to any astronomical telescope equipped with a 1.25" eyepiece. Its straightforward installation means you can spend more time observing and less time setting up. - Versatile Applications: Ideal for both professional astrophotographers and hobbyists, this astronomical telescope filter delivers sharp images. It is perfect for capturing stunning photographs of celestial objects, such as nebulae and star clusters, or for enhanced visual observations in light-polluted areas. - Compatibility: Specifically engineered for use with 1.25" eyepieces, this UHC filter is an essential accessory for anyone serious about astrophotography or detailed astronomical observation. - Performance: Crafted to provide excellent light transmission while blocking unwanted wavelengths, this filter ensures that your images are vibrant and rich in detail. Choose the UHC filter to elevate your astronomy experience and achieve clearer, more vivid observations of the night sky.