Celestron 94107 Variable Polarizing Moon Filter Reduces Brightness and Glare, Compatible with 1.25" Eyepieces Suitable for Lunar, Venus & Double Star Observation, Black

REDUCED BRIGHTNESS AND GLARE: Improves views of the brightest celestial objects like the moon, Venus and bright double stars. CUSTOMISED CONTROL: Adjust the level of light transmission from 1-40% for the best possible view for your specific target and current viewing conditions. SIMPLE TO USE: Just rotate the filter’s lower ring to adjust brightness. ATTACHMENT INSTRUCTIONS: The Variable Polarizing Filter threads onto any Celestron 1.25” eyepiece. STACKABLE: The filter can be threaded on both sides so you can stack it with other filters, such as colour or neutral density, if needed.