Celestron 93428 1.25 Inch X-Cel LX 3x Barlow Lens – Black & 94119-A 1.25 Inch Moon Filter

Celestron 93428 1.25 Inch X-Cel LX 3x Barlow Lens – BlackWhen inserted between the eyepiece and telescope, this 3x Barlow lens triples the magnification of all your 1.25-inch eyepieces. This is an accessory for owners of short, fast telescopes, and is especially helpful for boosting the magnification during lunar or planetary observations under good seeing conditions. The apochromatic, fully multi-coated optics offer colour correction and contrast. The black anodized housing with orange highlights matches the eyepieces in the Celestron X-Cel LX line. A centralized rubber grip helps to keep your hands securely on the barrel, even when your fingers are cold or you are wearing gloves. A brass compression ring just inside the top of the X-Cel Barlow grabs your eyepiece gently but firmly when you turn the thumbscrew. Once the thumbscrew has been secured in place, the brass ring keeps your eyepiece in the Barlow instead of relying on the tip of the thumbscrew itself, offering a better and protecting the barrel from scratches. The barrel of the Celestron X-Cel LX 3X Barlow is threaded to accept 1.25-inch filters, allowing you to change eyepieces without requiring you to remove and re-attach the filter from each eyepiece barrelstron 94119-A 1.25 Inch Moon FilterCelestron’s Moon Filters are economical eyepiece filters 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 for the 31.7mm filter. Transmission is about 18% 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, we all 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”, 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.. 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.