Bresser Spezial-Astro 25x70 Binoculars
The Bresser Spezial-Astro 25x70 is designed for observers who want a single instrument that works equally well for the night sky and distant daytime targets. These astronomy binoculars with 70mm lenses and 25x magnification reveal faint objects - nebulae, star clusters and satellite passes - while remaining perfectly capable during the day for watching wildlife, landscapes or ships on the horizon.
High-contrast optics for day and night
The optical system is built around BaK-4 glass Porro prisms with fully multi-coated (FMC) anti-reflection coatings on all air-to-glass surfaces. The result is a bright, high-contrast image with fine detail even at dusk or by moonlight. A twilight factor of 42 and an exit pupil of 2.8 mm confirm that the light-gathering performance matches the demands of night-time observation.
Porro prism design for natural depth perception
The wide-base Porro construction delivers a naturally three-dimensional view that compact straight-prism binoculars simply cannot match. The aluminium body with a rubber-armoured finish sits securely in your hands and handles everyday knocks in the field without trouble. Weight without accessories is 1,240 g.
Comfortable viewing - even with glasses
Fold-down rubber eyecups and adjustable dioptre correction let you observe comfortably without removing your glasses. The 17 mm eye relief is generous enough for spectacle wearers - the full image remains visible with no clipped edges. The central focusing wheel turns smoothly and sharpens both eyepieces at once, so switching between near and distant subjects is quick and easy.
Tripod-ready for steady astronomical use
At 25x magnification, any hand movement shows in the image. The Bresser Spezial-Astro 25x70 therefore includes a tripod adapter thread located on the central axis - attaching the binoculars to a photographic tripod or an equatorial mount is straightforward. Short sessions are fine hand-held, but for comfortable astronomical work a tripod is essential. Please note that the tripod adapter is not included.
Ready to use straight from the box
The Bresser Spezial-Astro 25x70 binoculars come with objective lens caps, eyepiece covers and a padded nylon carry case with compartments. Everything you need for safe transport and immediate use is included.
Technical specifications
| Parameter |
Value |
| Magnification |
25x |
| Objective lens diameter |
70 mm |
| Prism type |
BaK-4 Porro |
| Lens coating |
FMC (Fully Multi-Coated) |
| Exit pupil |
2.8 mm |
| Twilight factor |
42 |
| Eye relief |
17 mm |
| Eyecups |
Fold-down rubber |
| Dioptre correction |
Adjustable |
| Tripod adapter thread |
Yes (adapter not included) |
| Body material |
Aluminium with rubber armour |
| Weight (without accessories) |
1,240 g |
| Included accessories |
Objective caps, eyepiece covers, padded nylon case |
Who are these binoculars for?
The Bresser Spezial-Astro 25x70 suits observers who want to explore the night sky without investing in a full telescope setup. The large 70mm lenses gather enough light to show star clusters, nebulae and the brighter deep-sky objects clearly. During the day, the same optics work well for nature watching or any activity where long-range detail matters.
Stargazing highlights within reach
With these binoculars you can observe the craters of the Moon, the moons of Jupiter, the Pleiades star cluster and the core of the Andromeda Galaxy. The wide field of view makes it easy to scan the Milky Way and find your way around the sky - a great starting point before moving on to a telescope.
A practical choice for versatile observers
If you need one instrument for both astronomy and daytime use, the Bresser Spezial-Astro 25x70 offers a well-balanced combination of aperture, magnification and build quality at an accessible price. Mount it on a tripod for the best results, and it will reward you with steady, detailed views under the stars.
