25x70 Binoculars
- Spezial Astro binoculars for astronomical observations
- Long distance observations
- Extremely high light gathering capacity
- High magnification for distance use
- Magnification: 25x / objective lens diameter: 70mm
- Fully multi coated optics / tripod thread available
- Dimensions: 275x205x82mm / weight: 1300g
- What's included: binoculars, neckstrap, dust covers, case
With BRESSER, you can enjoy a smooth introduction to the vast world of astronomy. Our detailed information ("Telescope Guide") provides valuable tips for beginners—but even experienced astronomers can use the information we provide (e.g., tables for the geographical latitude of all major world cities) as a reference.
Here is the table of contents of the comprehensive BRESSER Telescope Guide:
- 2. The View into the Starry Sky
- 2.1 Observing with the Naked Eye
- 2.1.1 Observing Constellations with the Naked Eye
- 2.2 Observing with Binoculars
- 2.2.1 Observing Planets and Moons with Binoculars
- 2.2.2 Observing Deep Sky Objects with Binoculars
- 2.2.3 Every Beginning is Easy
- 2.3 Observing with a Telescope
- 2.4 The Moon
- 2.4.1 The Moon Phases
- 2.4.2 The Far Side of the Moon
- 2.4.3 The Moon Map
- 2.4.4 Maria (Seas)
- 2.4.5 Mare
- 2.4.6 Craters
- 2.4.7 The Ray Craters
- 2.5 Observing the Solar System with a Telescope
- 2.5.1 Where are the Planets?
- 2.5.2 Planet Observation
- 2.5.3 The Position of the Planets Relative to the Sun
- 2.5.4 The Planets Introduce Themselves
- 2.5.5 Deep Sky Observation with a Telescope
- 2.6 Practical Observation Tips and Tricks
- 2.6.2 Tips for Optimal Observation Conditions
- 2.7 The Most Beautiful Objects Throughout the Year
- 4. Telescopes
- 4.1 The Telescope as an Observation Instrument
- 4.2 Optics
- 4.2.1 Refractor (Lens Telescope)
- 4.2.2 Reflector (Mirror Telescope)
- 4.3 Mechanics
- 4.3.1 Altazimuth Mount
- 4.3.2 Equatorial Mount
- 4.3.3 Drive Motors
- 4.4 Accessories
- 4.4.1 Eyepieces
- 4.4.2 Important Tips for Eyepiece Selection
- 4.4.3 Filters
- 4.4.4 Photographic Accessories
- 4.4.5 Other Accessories
- 5.1 Which Telescope for Whom?
- 5.1.1 Deep-Sky Observations
- 5.1.2 Observing Closer Planets
- 5.1.3 The Topic of Portability
- 5.1.4 Price Factor When Buying a Telescope
- 6. Useful Tables
- 6.1 Table for the Geographic Latitude of All Major World Cities
- 6.1.1 Observers in the Northern Hemisphere (N):
- 6.1.2 Observers in the Southern Hemisphere (S):
- 6.2 Lookup Table for Notable Stars
- 6.3 Getting Acquainted with the Universe - or: Distances in Space
Sky Guides by Bresser
True art of living consists in seeing the wonderful in the everyday. (Pearl S. Buck)
Table of Contents
1. The History2. The Features
2.1 The Key Figures
2.2 The Magnification
2.3 The Objective Diameter
2.4 The Exit Pupil
2.5 The Twilight Factor
2.6 The Brightness
2.7 The Interpupillary Distance
2.8 The Eye Relief (Focal Point of the Eyepiece)
2.9 The Field of View
2.10 The Focus
2.11 The Rubber Armor
3. The Glass
3.1 The Coating
3.2 The Glass Material
3.3 Porro or Roof Prisms
3.4 Achromats
4. Types of Binoculars
4.1 Binocom or Nautic
4.2 Night Glass or Night Vision Device
4.3 Residual Light Amplifiers
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Thanks to fully multi coated Bak-4 glass material and the extra large objective lens diameter, these binoculars provide bright and high resolution images.
The high 25x magnification it is convenient not only for observing astronomical objects, but is also practical for viewing distant terrestrial objects too. Due to a very high reduction of stray light, by multi coating all air to glass surfaces, the binoculars deliver the best possible performance and excellent contrast.
Diopter compensation and foldable rubber eyecups give eye glass wearers the possibility of making the best use of these optics’ field of view.
With the tripod thread in the lengthened centre axis, the SPEZIAL ASTRO can be mounted onto any photographic tripod. For tripod use you need the optional available tripod adapter (part No. 4914925). The use of a tripod is highly recommended with these binoculars, as at the high magnification of 25x it's difficult to maintain a steady image by hand holding (though this is possible for short periods).
FEATURES
- Binoculars for astronomical and long distance observations
- Extremely high light gathering capacity
- High magnification for distant objects
- Magnification: 25x / objective lens diameter: 70mm
- Fully multi coated / tripod thread available
- Dimensions: 275x205x82mm / weight: 1300g
- Tripod thread available
WHAT'S INCLUDED
- Binocular
- Neckstrap
- Dust covers
- Case
- Instruction manual
Bag/Pouch: | nylon carrying case with storage compartments. |
---|---|
Batteries included: | 0 |
Batteries required: | 0 |
Body armouring: | Rubber |
Body material: | Aluminium |
Colour: | black |
Compass: | 0 |
Diopter setting: | 1 |
Dust protection caps: | Dust protection caps for front lens and eyepiece holder |
ED glass: | 0 |
Exit pupil min. (mm): | 2.8 |
Extended warranty (years): | 5 |
Eyecups: | Rubber eyecups, foldable |
Eyepieces for eyeglass wearers: | 1 |
Eye relief (mm): | 17 |
Field of application [Binoculars]: | Astronomy, Bird watching & Nature observation, Night |
Field of view (degrees): | 2 |
Field of view at 1000m 7) (m): | 35 |
Focusing system: | Central focus wheel |
Inert gas purged: | 0 |
Interpupilar distance max. (mm): | 72 |
Interpupilar distance min. (mm): | 56 |
LE Eyepieces: | 1 |
Magnification: | 25 |
Material: | Aluminium |
Material prisms: | BaK-4 |
Mirror/Lens diam. (mm): | 70 |
Near focus from 7) (m): | 40 |
Net weight (without access.) (g): | 1300 |
Optical design: | Porro |
Power supply unit included: | 0 |
Product Family [Binoculars]: | Spezial-Astro |
Single eye adjustment: | 0 |
Total height (mm): | 82 |
Total length (mm): | 275 |
Total width (mm): | 205 |
Tripod adapter thread: | 1 |
Twilight factor 7): | 42 |
Type [Binoculars]: | Standard Binoculars |
Type of coating: | Fully multi-coated |
Waterproof 8): | 0 |
Zoom function: | 0 |
Produkt- und Sicherheitshinweise
Manufacturer:
Bresser GmbH, Gutenbergstraße 2, 46414 Rhede
www.bresser.de
- General safety instructions DANGER Risk of eye injuries! Never look directly at the sun or near the sun through this device. There is a risk of blindness! Children should only use the device under supervision. Keep packaging materials (plastic bags, rubber bands, etc.) away from children! There is a risk of suffocation! FIRE HAZARD! Do not expose the device especially the lenses to direct sunlight! The light concentration could cause fires. RISK of material damage! Do not dismantle the device! In case of a defect, please contact your dealer. They will contact the service center and may send the device in for repair. Do not expose the device to temperatures above 60°C!
- Never look at the sun through an eyepiece/telescope without a certified protection filter. A moon filter can never be used for solar observation. The moon filter is only suitable for moon observation. The solar filter must be mounted in front of the telescope opening, not at the eyepiece. Otherwise, the concentrated light beam through the optics will immediately destroy the filter foil, leading to severe eye damage, including permanent blindness.
- Never leave the optics unattended. Children and inexperienced adults could point the telescope at the sun without proper precautions and lose their eyesight.
- Do not expose the device to high temperatures.