Outfitted with a wide and useful focal length range that is ideal for all kinds of astronomical observation and astrophotography, the Alpine Astronomical Baader Hyperion 8-24mm Mark IV Zoom Eyepiece will be an invaluable addition to your telescope kit.





Its performance starts with a 7-element/4-group flat-field lens design that is treated with Phantom Coating Group multi-coatings. These features work together to deliver clear and bright high-contrast views with edge-to-edge sharpness without distortion or astigmatism. A simple rotating selection system allows users to run through the focal length range with positive click-stops at each setting, and for ease-of-use the eyepiece is parfocal so there will be little to no need to refocus when moving from one focal length to the next.





The Mark IV has been engineered for use on a wide variety of gear and comes with nosepieces to fit standard 1.25" drawtubes and accessories with the option to swap it for a 2" nosepiece or an adapter to thread onto standard 2" Schmidt-Cassegrain telescope (SCT) visual backs. Removing the eyecup reveals M43 T-mount threads that accept optional accessories from their Astro T-2 modular system, including camera-specific T-rings for projection astrophotography techniques, and extension tubes. For comfortable viewing, the eyepiece comes with three interchangeable eyecups: a fold-down rubber version, a winged model, and a large twist-up adjustable option.





From the moon to the planets to deep sky objects, the Mark IV zoom eyepiece provides versatility that is easy to use.Index matched for perfect optical performance with their Hyperion 8-24mm Zoom eyepiece for improved viewing and imaging, the Alpine Astronomical Baader Hyperion Zoom 2.25x Barlow Lens effectively increases the focal length of the eyepiece through the entire zoom range to boost the magnifications without affecting the eye relief.





Built with a triplet air-spaced lens configuration and treated with Phantom Coating Group multi-coatings, the Barlow delivers a bright and flat field of view from edge to edge without astigmatism. The interior of the housing is baffled and blackened to catch stray and diffracted light for improved contrast and resolution.





The Barlow is engineered with a modular body to add versatility to how it can be utilized. When used with the companion zoom eyepiece, the Barlow simply screws onto the eyepiece's filter threads for a secure and seamless fit. An included T-mount accepts standard optional T-rings for direct connection to cameras and imaging systems for projection astrophotography. Using the same T-mount, users can install an optional 1.25" ClickLock adapter for fast eyepiece changes. It can also be used with other 1.25" eyepieces as a conventional 2.25x Barlow by screwing it into the eyepiece's filter threads.