BOSTRON Field Scope, Astronomical Observation, IP65 Waterproof

Brand: BOSTRON
Model Name: CY300X100
Optical Tube Length: 500 mm
Eyepiece Description: FMC Red Film
Objective Lens Diameter: 100 mm
About this product
[100mm Large Aperture Objective Lens, Capturing Extreme Light and Shadow] Wide field of view of 36-17 meters/1,000 yards, say goodbye to dim views and enjoy a clear world! Equipped with a 100mm ultra-large aperture objective lens, designed like a bright window for your eyes, it significantly improves light transmission. Even in low-light conditions such as dawn, dusk, or cloudy skies, it displays bright and clear images, allowing you to observe the delicate patterns and vibrant colors of bird feathers without missing precious details.
[25x to 75x Ultra-Wide Zoom, Bringing Distant Scenery Within Reach] Continuous stepless zoom from 25x to 75x offers unparalleled observational flexibility. At the 25x wide-angle end, you can easily capture and observe the movements of flocks. At the 75x high-magnification end, you can instantly bring distant landscapes closer, allowing for precise observation of bird expressions, nesting details, and even pupil changes. It caters to diverse needs, from birdwatching to landscape appreciation.
[Professional Optical Structure for High-Definition Image Quality] No compromise on optical performance. The combination of high-quality BK7 prisms and FMC multi-layer broadband anti-reflection coating effectively reduces light scattering and chromatic aberration. It significantly improves image brightness, contrast, and color reproduction. The center of the field of view is sharp, and aberrations in the peripheral image are well-controlled. Every scene you view is reproduced realistically and clearly, reducing visual fatigue from prolonged observation.