Celestron EdgeHD .7x Telescope Reducer Lens 11in Telescopes. 7x Focal Reducer Lens 94240 is a powerful tool for flattening the field seen through your telescope allowing you to take faster photographs and capture a wider field of view through your eyepiece. These Celestron telescope accessories use a 5-element lens design to maintain the stellar flat-field performance power of Celestron Edge HD telescopes and they increase your telescope's field of view by 43percent allowing you to discover galaxies and star clusters that you would've been able to see only parts of before. Other reducer lenses diminish back focus making it harder to take good astrophotography photos but not this telescope accessory; it maintains the same back focus at f/10 allowing you to mount CCD cameras without a loss of resolution. When the Celestron EdgeHD .7x 5 Element Reducer Lens is installed it will make your telescope's speed one full F-stop above f/10 reducing the necessary exposure time by half allowing you to take photos twice as fast without any sacrifice of brightness. "Rare earth" lanthanum glass elements minimize chromatic aberration while the fully multi-coated lenses improve light transmission and color correction. What's more all lens elements on the Celestron Edge-HD .7x Lanthanum Glass Reduction Lens feature blackened edges to minimize internal reflections and improve contrast. The Celestron EdgeHD 0.7x Fully Multi-Coated Reducer Lens has a full-frame design that mounts directly to the 3.25" threads on the optical tube of an EdgeHD telescope. The telescope accessory has a clear 60mm aperture that is optimized for use with CCD image sensors with a 42mm image circle. The aluminum housing of the Celestron lens is precision CNC machined for precise optical alignment and durability and threaded metal covers on both ends of the lens assembly protect the integrity of the Celestron Edge HD .7x Focal Reducer Telescope Lens. With this reducer lens installed you can use all EdgeHD optics at f/10 f/7 and f/2 for incredible versatility. All existing Edge HD T-adapters can be used with the reducer for astrophotography. Get an expanded view of the night sky and take faster photos with the Celestron Edge HD .7x Fully Multi-Coated Focal Reduction Lens. Specifications for Celestron Edge-HD .7x Reducer Lens for Telescopes: Glass: 5-element Lanthanum Compression Factor: 0.7x Optical Coatings: Fully multi-coated Optimal Back Focus: 146mm Weight: 3.25 lbs Features of Celestron Edge HD 0.7x Blackened Edge Reducer Telescope Lens: Powerful focal reduction lens by Celestron Shortens focal length of telescope for improved field of view and faster exposure times Five element optical layout maintains Edge HD flat field performance Maintains consistent back focus when used with f/10 to accommodate wide variety of cameras Reduces exposure time by a half for faster photography Improves field of view by 43percent for viewing wide field images such as star clusters and galaxies Lanthanum glass elements for high contrast viewing with little aberration Fully multi-coated glass delivers excellent light transmission for bright images Blackened edges improve contrast and decrease internal reflection Threads directly to the 3.25" threads of an EdgeHD optical tube Clear 60mm aperture lens is optimized for a 42mm image circle Machined aluminum housing Threaded metal covers protect both ends of the lens assembly Allows Edge HD optics to be used at f/10 f/7 and f/2 for a complete imaging system Can be used with existing EdgeHD T-adapters Backed by the Celestron 2-year warranty Package Contents: Celestron Edge HD 0.7x Focal Reducer Lens 94240 Celestron 94241: EdgeHD .7x Telescope Reducer Lens 11in Telescopes
