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 , 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 transmission can be gradually adjusted from 1% to 80%, providing fine control over image brightness and performance as needed.

Specification:
Item Type: Telescope Polarizing Filter
Material: Aluminum, Optical Glass
Weight: Approx. 26g / 0.9oz
Size: 31.7mm / 1.25in
Thread Size: M28.6x0.6mm

Package List:
1 x Telescope Polarizing Filter
1 x Storage Box