Application: SVBONY Moon Filter Suitable for 1.25 inch Telescope Eyepieces Function: Reducing the amount of light entering the eyepiece, increases the contrast between the moon and the star; .allowing you to see more details about the moon and the stars Design: The appearance is gray, it can pass the linear polarization of the same direction of its polarization through about 80%; and make the linearly polarized light perpendicular to its polarization direction through less than 1%; does not change the moon's natural color Detail: standard 1.25" filter thread (M28.5 x 0.6) . Materials: Aluminum Package Includes: 1xSVBONY 1.25 inch Polarizing Filter 1XSVBONY Plastic Case

• Neutral colored optical glass does not change the moon's natural color
• Have a standard 1.25 inch filter thread (M28.5 x 0.6);It's a great birthday christmas gift

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