Celestron's 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. The clear aperture is 21mm and the transmission is about 18%.
|Name||Celestron - Moon Filter - 1.25"|
|Custom Stock Status||In Stock|
Delivery was a problem, however. Telescopes.net lost track of the order twice and had to be contacted twice before it finally shipped. (Posted on 10/4/2015)