Entatial Moon Filter, 1.25" Light Blue, Polarizing, Optical Glass

【Must-Have Artifact for Observing Lunar Nebulae】: This telescope filter is suitable for observing weak and low-contrast deep objects. These properties make it ideal for observing nebular objects such as nebulae. It can be used not only for astronomical observation, but also for astrophotography. 【Multilayer Coated Optical Glass】: The eyepiece filter adopts double-sided multi-layer coated optical glass lens, aluminum alloy frame, and a broadband penetrating film is added on the back to reduce reflected light. The ultra-high contrast filter (UHC filter) perfectly eliminates glare and ghosting, making the vision more perfect and the observation details clearer. 【Fine Polished Substrate】: This telescope filter, lunar filter has a precision polished substrate with good parallelism and accuracy. Double-sided fine polishing and polishing process ensure high parallelism. Make your shooting more stable. 【Key Features】: 1.25 inch telescope filter with high quality eyepiece filter used to reduce the brightness of the moon or planets, improve contrast and details. Reduces glare and improves clarity, so you can clearly see features of the moon and nebulae. 【Wide Application】: This 1.25" lunar filter fits all standard size 1.25" eyepieces and accessories. The filter has a groove to easily screw into the eyepiece.