Description
The Bresser astronomical binoculars line has been expanded with a high-class model with improved optical and operational characteristics, the Spezial-Astro SF 15x70 WP, which ranks among the best models for astronomy in its class. As befits specialized astrobinoculars, this model has separate focusing on each of the eyepieces, which provides maximum image sharpness at any astronomical distance in the entire range of diopter correction. It is also worth noting that to prevent fogging, the binoculars are filled not with traditional nitrogen, but with argon, which is fully inert gases that do not react under normal conditions with other chemical elements, retaining their original properties for a long time. The eyepieces consist of five lenses grouped in three groups and provide a high level of image correction and a fairly large viewing angle. Full multi-layered illumination of all optical surfaces and BAK4 prisms transmit an image that is evenly bright throughout the entire field. The 70mm objective lens gathers enough light for double star observations, star clusters and planetary observations. Despite its primary purpose, this instrument can be successfully used for stationary landscape observations, observations of city landmarks, observations of bird migration or ship movements at sea at a distance of one kilometer or more.
The aluminum body of the binoculars is highly rigid and lightweight. The classic arrangement of Porro prisms contributes to a more plastic image with a sense of three-dimensionality. The optical arrangement has allowed to reduce the minimum focusing distance to 10 meters, which is a really good indicator for binoculars of this arrangement. The accessories of the binoculars also deserve high praise. The lens caps are attached to the body with straps, which makes it impossible to lose them. The neoprene neck strap is wide enough not to squeeze the neck and shoulders when transporting the binoculars. The case, with fittings in the form of fastex, is customized for this model, thanks to which the binoculars fit perfectly in it and do not hang around inside.
- Warranty: 12 months
- Brand registration country: Germany
- Country of origin: China
- Weight: 1900 g
- Dimensions: 290 x 215 x 85 mm
- Material: Aluminum with rubber coating
- Prism material: BAK4
- Additional features: Adjustment of the center distance, mm: 56 - 74 Diopter correction: -5 / + 5 Possibility of attaching a tripod adapter Individual focusing on each eyepiece
- Relative Brightness: 21.78
- Class: Astronomical
- Exit pupil diameter: 4.67 mm
- Twilight factor: 32.4
- Minimum focusing distance: 10 m
- Actual viewing angle: 4.4°
- Extended eyepiece point: 20 mm
- Eyeglass frames: Fold Down eyecups.
- Sealed construction: 100% waterproof housing
- Protection: Moisture-proof Gas-filled Shock-resistant
- Field of view at 1000 m: 77 m
- Zoom ratio: 15x
- Zoom type: Constant
- Construction type: Porro
- Type: Binoculars
- EAN code: 4007922058931
- Article number: 927553
- Brand: Bresser
- Package dimensions: 39 x 30 x 10.5 cm
- Package weight: 2.7 kg
- Color: Black
- Lenses: Fully Multi-Coated
- Maximum magnification:: 15
