The Celestron Moon Filter - 1.25 in is an economical eyepiece filter that reduces the brightness of the moon and improves its contrast, so that greater detail can be observed on the lunar surface. The clear aperture is 21mm and the transmission is about 18%.
Celestron Moon Filter - 1.25" - Features
- A must-have for lunar observation
- Reduces moon's brightness and improves contrast
- View the lunar surface in greater detail
- Fits the standard 1.25-inch telescope eyepiece mount