Celestron Moon Filter (1.25")

The Celestron Moon Filter in 1.25" offers a quick and convenient solution for lunar observations. By simply attaching it to the insert barrel of most 1.25" eyepieces, you can enhance your viewing experience by reducing glare and enhancing lunar details. This filter is not only beneficial for observing the Moon but can also be useful when viewing Venus or bright terrestrial scenes.

The Celestron Moon Filter (1.25") provides an easy way to transform your regular eyepiece into one suited specifically for lunar observations, making it a valuable accessory for amateur and experienced astronomers alike. 

Product Features in Detail

Celestron Moon Filter (1.25")

The Celestron Moon Filter (1.25") reduce the amount of light coming into your eye during lunar observations to improve the view and contrast. The filter transmits light uniformly across the entire visual spectrum while stepping down the light throughput by 87%—making it more comfortable to view the bright moon from the first quarter phase through the full, and back towards the last quarter, all while maintaining color-neutral views without reflections, ghosting, or stray interference light. 

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”, just as they would when you step out into the sunlight on a bright summer’s day. When we’re in the sunlight, we often wear sunglasses. They help us relax our eyes, protect us from glare, and help us see things more clearly. 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.

The Celestron Moon Filter simply screws onto 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. A Moon Filter is also helpful when observing Venus or bright terrestrial scenes. This filter is not suitable for viewing the Sun.