Celestron – Variable Polarizing Moon Filter for Telescopes – Fits 1.25″ Telescope Eyepieces – Adjustable 1-40% Light Transmission – Perfect Filter for Moon, Venus, and Double Star Viewing

The Earth’s Moon is the most popular object to observe with a telescope. It’s an obvious target that’s easy to locate and full of exciting geographical features to explore. The Celestron variable polarizing filter enhances lunar viewing by cutting the Moon’s bright glare by up to 40%, improving contrast and making faint details easier to observe. Most amateur astronomers keep a Moon filter on hand as an essential part of their observing kit because it provides a more comfortable view and reduces eye fatigue. This filter goes beyond a traditional Moon filter by allowing you to customize the level of light transmission from 1% to 40%. It does not alter the color of the object you’re observing, making it a great choice for astroimaging, especially when imaging the surface of the Moon. But a polarizing filter isn’t just for the Moon; it also boosts contrast when viewing deep-sky objects from light polluted areas. And for terrestrial observers, the Moon filter cuts down the brightness when viewing land-based targets around sand and snow. The Celestron Moon Filter simply screws onto the insert barrel of most 1.25” eyepieces and can stack with other 1.25” filters.