Includes 17mm and 6mm 1.25" Plössl Eyepieces 2x Barlow Lens Doubles the Magnification of Any 1.25" Eyepiece Three Filters Included: #80A Blue, #25 Red, and Moon All Items Protected in a 12.25" x 9.5" x 4.5" Foam-Lined Hard Case Total Kit Weight of 36 oz (1021 g) Description FAQ Specifications In the Box Warranty Celestron Observer's Accessory Kit - 1.25" The Celestron Observer's Accessory Kit packages seven essential 1.25" accessories into a single collection to fundamentally expand your telescope's capabilities. This kit includes two Plössl eyepieces, a 17mm and a 6mm model, each with a 52° apparent field of view for framing celestial objects. A 2x Barlow lens effectively doubles your magnification options, while three separate filters—a #80A Blue, #25 Red, and a dedicated Moon filter—are included to enhance specific planetary and lunar details. Two Plössl Eyepieces: 17mm and 6mm for Medium and High Power This kit provides two versatile Plössl eyepieces, the workhorse of amateur astronomy. The 17mm Plössl delivers a comfortable, medium-power view ideal for observing open star clusters, larger galaxies, and nebulae. For high-magnification views of the Moon and planets, the 6mm Plössl brings surface details into focus, resolving cloud belts on Jupiter and crater walls on the Moon when seeing conditions permit. Both eyepieces feature a 4-element design and are fully multi-coated for bright, high-contrast images across their 52° apparent field of view. 2x Barlow Lens: Double Your Magnification Options The included 2x Barlow lens instantly doubles the power of any 1.25" eyepiece, effectively giving you four different magnifications with the eyepieces in this kit. The 17mm eyepiece functions as an 8.5mm, and the 6mm provides the power of a 3mm eyepiece for maximum planetary detail. This versatile accessory also features integrated T-threads, allowing you to attach a DSLR camera (with an optional T-ring) for basic astrophotography, making it a dual-purpose tool for both visual observation and imaging. 3 Planetary & Lunar Filters: #80A Blue, #25 Red, and Moon Unlock subtle details on solar system objects with this curated set of 1.25" filters. Each filter threads directly onto the eyepiece barrel, enhancing contrast on specific targets. #80A Blue Filter: Increases the contrast of Jupiter's cloud belts and highlights the polar ice caps on Saturn. #25 Red Filter: A standard filter for observing Mars, the #25 Red helps define the polar ice caps and darkens surface features. Due to its light reduction, it performs best on telescopes with larger apertures. Moon Filter: An indispensable accessory for lunar viewing, this neutral density filter reduces the overwhelming glare of the Moon, allowing your eye to perceive finer details like rilles and small craters without being dazzled. Protective 12.25" Case & Cleaning Kit The entire seven-piece accessory set is housed in a durable plastic carrying case measuring 311.15mm x 241.3mm x 114.3mm. Inside, die-cut foam provides a secure, cushioned spot for each component, protecting your investment from impacts and dust. A microfiber cleaning cloth is also included to safely remove smudges and fingerprints from your optics, ensuring your views remain sharp and clear. What does the Celestron Observer's Accessory Kit offer a beginner? This kit is an ideal first upgrade for any telescope that uses 1.25" eyepieces. It provides a significant step up from the basic eyepieces included with most entry-level telescopes by offering two different magnifications, a way to double them with the 2x Barlow, and a set of planetary and lunar filters to start exploring specific details on the Moon and planets. How can I use this Observer's Kit to see more detail on Jupiter with my telescope? For Jupiter, start with the 17mm Plössl for a full-disc view. Then, thread the #80A Blue filter onto the eyepiece; this will increase the contrast between the dark cloud belts and the lighter zones. For higher magnification, use the 6mm Plössl or combine the 17mm with the 2x Barlow to zoom in on features like the Great Red Spot, seeing conditions permitting. Which filter in the Observer's Accessory Kit is best for observing Mars? The #25 Red filter is the best choice for Mars. It is specifically used to enhance the visibility of the Martian polar ice caps and to bring out the contrast of dark surface features against the bright desert regions. Because it reduces a significant amount of light, it is most effective with larger aperture telescopes (typically 6" or more). Can I use the Barlow lens in this kit for astrophotography? Yes. The 2x Barlow has T-threads machined into its housing. This allows you to unscrew the eyepiece holder and attach a DSLR camera body directly to the Barlow using a T-Ring specific to your camera brand (sold separately). This setup is suitable for taking photos of the Moon and bright planets. Are the eyepieces in the Observer's Accessory Kit compatible with any telescope? The eyepieces, Barlow, and filters are all in the 1.25" format, which is the most common standard for telescope focusers. They will work with virtually any modern refractor, reflector, or catadioptric telescope that accepts 1.25" eyepieces. Why is a Moon filter necessary? The Moon, especially when full, is extremely bright through a telescope. This intense glare can be uncomfortable to view and washes out subtle surface details. The Moon filter acts like a pair of sunglasses for your telescope, reducing the overall brightness to a comfortable level, which improves contrast and allows you to see much finer features like crater rays, mountains, and rilles. Eyepiece Focal Lengths 17mm, 6mm Eyepiece Design Plössl (4-element) Eyepiece Barrel Size 1.25" Apparent Field of View 52° Optical Coatings Fully Multi-Coated Barlow Lens 2x Magnification, 1.25" barrel Filters Included #80A Blue, #25 Red, Moon Filter (1.25") Case Plastic, foam-lined Case Inside Dimensions 311.15mm x 241.3mm x 114.3mm (12.25" x 9.5" x 4.5") Total Kit Weight 36 oz (1021 g) 17mm Plössl Eyepiece (1.25") × 1 6mm Plössl Eyepiece (1.25") × 1 2x Barlow Lens with T-Adapter (1.25") × 1 #80A Blue Filter (1.25") × 1 #25 Red Filter (1.25") × 1 Moon Filter (1.25") × 1 Microfiber Cleaning Cloth × 1 Plastic Carrying Case with Foam Insert × 1 Celestron 2-Year Warranty
