Ocular con zoom Alstar de 1,25 ", 7 a 21 mm, telescopio multicapa con zoom | Óptica FMC de 7 elementos, 4 grupos, alivio ocular de 16-33 mm, campo de visión amplio de 30-47°, observación planetaria y de cielo profundo, accesorios para telescopios

Descripción

Product description Freedom To Choose 1.25" 8-24 Zoom Eyepiece 1.25" 66 Degree 6mm Eyepiece 12.5mm Illuminated Eyepiece Function 1 Focal length from 8mm to 24mm Function 1 Focal length 6mm Function 1 Focal length 12.5mm Function 2 Wide 40 degree to 60 degree apparent field of view Function 2 Wide 66 degree apparent field of view Function 2 40 degree apparent field of view Function 3 Premium 7-element 4-group high-index optical system Function 3 5-lenses designed with anti-reflective coating Function 3 Fully multi-coated anti-reflection coatings on a four-element Plossl design Beginner-Friendly Zoom Eyepiece, Multiple Magnifications at the Flick of a Wrist The classic from the SP Zoom series enables sharp images and easy magnification of the Moon, planets and other fascinating deep-sky objects. 7-21MM Focal Length for Observing Comfortably and Intuitively With just one turn, you can increase or decrease the magnification while keeping an eye on the object. Enjoy Excellent Optical Quality and Sharp Contrasts All optical elements of this 7-element 4-group eyepiece are therefore multi-coated and blackened at the edges. This ensures excellent contrasts and prevents unwanted reflections. SP zoom eyepieces also correct aberration and colour errors. Universal 1.25 Inch Compatibility & Filter Threads for Enhanced Versatility You can also easily insert Moon, colour or nebula filters via the 1.25'' filter thread to further optimise the quality of your view for more detail. An All-round Practical Eyepiece The foldable rubber eyecup additionally eliminates any stray light. Whether you wear glasses or not, you are guaranteed a good view at a comfortable distance to the eyes. Wide 30° to 47° Field of View with Durable All-Metal Construction

Características

• Seamless 7-21mm Stepless Zoom for Planetary & Deep Sky Viewing: Effortlessly adjust magnification from 7mm to 21mm with a smooth twist of the zoom housing; This versatile eyepiece eliminates the need for multiple fixed lenses; making it ideal for observing lunar craters; planetary details; star clusters and nebulae without interrupting your stargazing session; Experience precise; continuous zoom control for both astronomy and terrestrial viewing
• Extended 16-33mm Eye Relief & Foldable Eyecup for Eyeglass Wearers: Designed with an exceptional 16mm to 33mm adjustable eye relief; this eyepiece fully accommodates observers who wear glasses; providing a clear; vignette-free view; The foldable soft-rubber eyecup ensures comfort for all users; allowing for extended observation sessions at every focal length without eye strain or discomfort
• Premium 7-Element, 4-Group Multi-Coated Optical System: Features a high-performance 7-element 4-group optical design with multi-layer anti-reflection coatings; This premium configuration delivers exceptionally sharp; high-contrast; and bright images; Blackened lens edges and anti-reflective threading effectively eliminate stray light and internal reflections for vivid; true-to-life celestial observation and astrophotography
• Wide 30° to 47° Field of View with Durable All-Metal Construction: Enjoy a dynamically wide apparent field of view; ranging from 30° at 21mm to 47° at 7mm; perfect for tracking both planetary and deep-sky objects; The eyepiece boasts a rugged; all-metal body with a knurled rubber grip for secure handling; Its robust construction ensures long-term durability and stability during use
• Universal 1.25 Inch Compatibility & Filter Threads for Enhanced Versatility: This standard 1.25-inch barrel is compatible with the vast majority of amateur telescopes; It includes filter threads for attaching standard astronomical filters; enhancing your viewing options; It's an essential; high-value accessory for astronomers seeking a single; high-quality eyepiece to replace multiple fixed focal length options

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