Bresser Spezial Astro 20x80 binocular telescope
Overview
The Bresser Spezial Astro 20x80 binocular telescope represents a premium solution for demanding observers seeking a combination of powerful optics and reliable construction. With its large 80mm objective diameter, this telescope can gather substantial amounts of light, enabling observation of fainter objects under reduced lighting conditions. The 20x magnification provides sufficient detail for studying distant objects, while the Porro prism ensures proper image orientation.
Advanced optical system
The model features high-quality BaK-4 glass optics that guarantee high contrast and sharpness across the entire field of view. Multi-layer anti-reflective coating minimizes light loss and suppresses unwanted reflections, resulting in brighter and more contrasted images. The Porro prism construction ensures a compact design while maintaining excellent optical parameters.
Key optical specifications
- Magnification: 20x
- Objective diameter: 80mm
- Exit pupil: 4mm
- Twilight factor: 40
- Relative brightness: 16
- Field of view: 56m at 1000m distance
- Minimum focusing distance: 9 meters
Construction and durability
The robust rubber armor not only protects optical components from impacts, moisture, and dust, but also ensures safe and comfortable grip during extended use. The 2.13kg weight represents a reasonable compromise between stability and portability, though a tripod is recommended for longer observation sessions. Dimensions of 330×115×235mm make this telescope relatively compact given its optical parameters.
Weather resistance
The waterproof construction allows use in adverse weather conditions, which is particularly appreciated during field observations. The design accommodates users wearing eyeglasses, expanding the range of potential users.
Astronomical applications
Astronomical observation is among the main strengths of this telescope thanks to the combination of sufficient magnification and light-gathering power. You can observe the Moon in impressive detail with visible craters and mountain ranges, while brighter planets like Jupiter and Saturn reveal their basic characteristics including their largest moons.
Deep-sky capabilities
For observing star clusters, nebulae, and galaxies, the telescope provides sufficient light-gathering power to capture fine details that remain hidden to smaller optics. Telescopes with 80mm aperture can display stars down to 11th magnitude, significantly expanding deep-sky observation possibilities. Image stability when used on a tripod allows extended observation without eye fatigue.
User-friendly features
The central focusing wheel allows quick and precise focusing to the desired distance, while the diopter correction mechanism ensures optimal adjustment for individual observer needs. The design incorporates smooth focusing action and comfortable eyepiece positioning for extended viewing sessions.
Complete package and accessories
The standard package includes everything necessary for immediate observation. A quality transport case ensures safe transportation and investment protection, while a microfiber cleaning cloth enables proper optical maintenance. The user manual provides important information about optimal settings and telescope care.
Recommended accessories
- Quality tripod with fluid head for perfect stability at high magnification
- Camera adapter for basic astrophotography
- Additional cleaning supplies for optical maintenance
Maintenance and care
For optimal performance, we recommend regular cleaning of objectives and eyepieces with special optical products. During storage, keep the telescope in a dry environment with caps on objectives and eyepieces. The quality multi-layer coating is durable but requires gentle handling during cleaning.
Technical specifications
- Optical design: Porro prism binoculars
- Prism material: BaK-4 glass
- Coating: Fully multi-coated
- Interpupillary distance: Adjustable
- Diopter adjustment: ±3 diopters
- Weight: 2.13kg
- Dimensions: 330×115×235mm
- Waterproof: Yes
- Eye relief: Suitable for eyeglass wearers
