Alstar Telescope Eyepiece 4mm, 1.25" Wide Angle 58 Degree Telescopes Lens

Alstar Telescope Eyepiece 4mm, 1.25" Wide Angle 58 Degree Telescopes Lens

• Immersive Wide-Field Observation: Enjoy a expansive 58-degree field of view with the 4mm focal length; ideal for capturing fine planetary details and deep-sky objects; Perfect for observing lunar craters; Jupiter’s cloud bands; and Saturn’s rings with exceptional edge-to-edge clarity
• Advanced Multi-Coated Optical System: Features a 5-element lens design in 3 groups with fully multi-coated surfaces to maximize light transmission and minimize lateral chromatic aberration; Delivers sharp; high-contrast images even at high magnifications
• Universal 1.25-Inch Compatibility: Compatible with all telescopes equipped with a standard 1.25-inch focuser; Includes a threaded barrel for attaching 1.25-inch filters or accessories; enabling flexible configurations for planetary or deep-sky observation
• Ergonomic Anti-Glare Design: Equipped with a rotatable barrel and convertible rubber eyecup for comfortable extended use; Blackened lens edges and internal anti-stray light treatment reduce glare; ensuring relaxed observation for all users
• Durable Precision Engineering: Crafted from high-quality aluminum with precision optical alignment; ensuring long-lasting performance and reliable imaging quality; Ideal for both amateur astronomers and experienced observers