Specification Brand : ZJchao BulletPoint1 : 【Reduced 】Thanks to its advanced design, the telescope eyepiece polarizing filter minimizes by transmitting only 13% of reflected light. This feature enables clearer observations of the moon's exterior and enhances your ability to study lunar details without discomfort. Reduce distractions from bright reflections and enjoy more focused astronomical observations. BulletPoint2 : 【Premium Construction】The telescope variable polarizing filter is crafted with an anodized aluminum frame, ensuring durability and longevity. Each filter is precisely ground and highly polished, leading to superior craftsmanship that provides stable performance in various viewing conditions. Whether you're a beginner or an experienced astronomer, this filter is designed to withstand regular use, keeping your optics protected and effective. BulletPoint3 : 【User-Friendly Design】Equipped with a standard M28.5x0.6 thread, the telescope CPL filter telescope is compatible with a wide range of telescopes. Its 1.25-inch size makes it a versatile universal filter ideal for beginners. Easy to attach and detach, it simplifies your setup, allowing you to concentrate on your stargazing without hassle. BulletPoint4 : 【Enhanced Contrast】The telescope polarizing filter utilizes two pieces of optical glass to effectively reduce the amount of light that enters your eyepiece. This enhancement increases the contrast, allowing you to view bright celestial objects such as the moon or planets with greater detail. You can adjust the darkening level to suit your observing needs, resulting in an enriched viewing experience. BulletPoint5 : 【Rotating Adjustment】The telescope polarizing moon filter features a rotating adjustment that lets you control light from 1% to 80%. This fine-tuning capability allows for precise image brightness adjustments, catering to your specific observational requirements. Whether you're observing bright objects or exploring dimmer deep-sky wonders, this filter adapts to enhance your experience. Color : One Color ItemName : Telescope Variable Polarizing Filter, Telescope Polarizing Moon Filter Variable Linear Aluminum Optical Glass Telescope Eyepiece Polarizing Filter for Astronomical Telescope ItemPackageDimensions_Height : 2 centimeters ItemPackageDimensions_Length : 7 centimeters ItemPackageDimensions_Width : 7 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : telescope-filters Manufacturer : ZJchao Material1 : Aluminum Material2 : Optical Glass ModelNumber : ZJchaob9r1ezmkya NumberOfItems : 1 NumberOfPieces : 1 PartNumber : ZJchaob9r1ezmkya PhotoFilterEffectType : other PhotoFilterThreadSize : 57 centimeters ProductDescription : 1. PREMIUM MATERIALS AND CRAFTSMANSHIP: This CPL filter is made of anodized aluminum frame, precisely ground and highly polished to ensure durability. 2. ENHANCED CONTRAST: The use of two piece optical glass reduces the amount of light entering the eyepiece, thus increasing the contrast of the eyepiece. While viewing bright objects, such as the moon or certain planets, you can gradually darken the field of view to a level that simultaneously increases contrast, reduces , and increases the amount of viewable detail, depending on your needs. 3. REDUCED : The polarizing filter reduces by allowing only 13% of reflected light to be transmitted, which means you can view the lunar more clearly and study the moon more comfortably. 4. EASY TO USE: The polarizing filter has a standard M28.5x0.6 thread that is compatible with many telescopes. The 1.25inch polarizing filter is the universal lunar and planetary filter for starters. 5. ROTATING ADJUSTMENT: By rotating the filter housing, light can be gradually adjusted from 1% to 80%, providing fine control over image brightness and performance as needed.