Celestron Moon Filter
- Celestron 1.25” Moon Filter Reduces glare and increases contrast of the Moon
- Useful for extra bright planets as well as terrestrial viewing over sand or snow
- Threads onto most 1.25” eyepieces in seconds
The Celestron Moon Filter simply screws into the insert barrel of most 1.25” eyepieces. It only takes a second or two to transform your regular eyepiece into one suited for lunar observations. The Moon Filter by Celestron reduces the amount of light (from the Moon) which enters your eye from your telescope. A Moon Filter is also helpful when observing Venus or bright terrestrial scenes. This filter is NOT suitable for viewing the Sun! It should never by used as a solar viewing filter!
The Moon has the distinction of being the most often viewed celestial object through backyard telescopes. It is undoubtedly beautiful and mysterious, and is one of those constants in our lives that connects us to every other being on our planet. Regardless of who we are or where we live or travel, all people on Earth look at the same moon.
It is difficult to look at the Moon through a telescope and see all of the details due to its brightness. Our eyes are not ready for the bright beam of light that emits from the eyepiece, and they “stop down.” This effect can reduce our eye's resolving power. When amateur astronomers observe the Moon, we use a moon filter. A Celestron Moon Filter provides similar benefits to those of sunglasses...our eye relaxes and opens up to let us see more detail. This is especially important when observing the Moon when it is near full.