Celestron 1.25" Moon Filter 18 % Light Transmission
Celestron 1.25" Moon Filter
The Celestron Moon Filter is an economical eyepiece filter for reducing the brightness of the Moon and improving contrast, so greater detail can be observed on the lunar surface. This filter is designed to be installed inside the barrel of a 1.25" eyepiece which has the appropriate internal threads for accepting eyepiece filters. The clear aperture is 21 mm and the transmission is about 18%. Curious to learn more about eyepiece filters? Check out the comprehensive video below!