Bresser AC 90/900 - Sharp images of Moon and Planets with stable EXOS-1 mount
The Bresser AC 90/900 is an ideal telescope for anyone who wants to see the Moon, planets and star clusters in detail. With its 90 mm lens, it captures a lot of light, giving you bright and high-contrast images. The longer focal length of 900 mm gives sharp magnifications - perfect for those who want to see more detail on Jupiter, Saturn or the lunar surface.
Sharp, clear and true-to-life image
The achromatic lens corrects color aberrations and delivers a natural image. That means you can view bright objects such as the Moon or Venus without distracting color glare. The f/10 aperture ratio keeps your image calm and sharp even at higher magnifications - so every detail remains visible.
Sturdy EXOS-1 mount for flicker-free images
The included EXOS-1 mount provides the stability you need for relaxed observation. This mount can carry up to 7 kg, keeping the telescope stable even in windy conditions or heavier accessories. Want even smoother tracking? Expand it with a motor for automatic tracking. This will keep your target object neatly in view while you observe or take pictures.
User-friendly and fully equipped
The telescope is ready to use immediately. In the box you will find everything you need: a 26 mm eyepiece, 6×30 viewfinder, 90° zenith mirror, sunscreen, star map and even a smartphone adapter. Perfect for getting started right away - or for capturing your first photo of the Moon.
What to expect
✓ Moon: Sharp craters, mountains and shadows in exquisite detail
✓ Planets: clear cloud bands on Jupiter and the rings of Saturn
✓ Star clusters: brightly visible with sharp star points
✗ Deep-sky: limited visibility due to long focal length
✗ Astrophotography: only suitable with additional motor or accessories
Specifications
Optics
| Feature | Description |
|---|---|
| Type | Refractor |
| Design | Achromat |
| Aperture (mm) | 90 |
| Focal length (mm) | 900 |
| Focal Ratio (f/) | 10 |
| Resolution (″) | 1,28 |
| Boundary magnitude | 11,6 |
| Light output | 170× |
| Max. useful magnification | 180× |
| Tube weight (kg) | 2,5 |
| Tube construction | Full tube |
Focuser
| Feature | Description |
|---|---|
| Design | Rack Focuser |
| Ocular connection | 1,25″ |
Mount
| Feature | Description |
|---|---|
| Type | Equatorial |
| Design | EXOS-1 |
| GoTo steering | No |
| Carrying capacity (kg) | 7 |
| Weight (kg) | 4 |
Tripod
| Feature | Description |
|---|---|
| Type | Tripod |
| Material | Steel |
| Weight (kg) | 4,7 |
Included accessories
| Section | Description |
|---|---|
| Ocular | SP 26 mm (1.25″) |
| Seeker | 6×30 |
| Zenith mirror | 90° star diagonal (1.25″) |
| Solar filter | Includes |
| Smartphone adapter | Yes |
| Rotating star chart | Yes |
| Counterweight | 2 kg |
General
| Feature | Description |
|---|---|
| Series | Messier |
| Shipping weight (kg) | 14,7 |
| Observation goals | Moon & Planets, Nebulae & Galaxies |
| Sun Observation | Only with suitable sunscreen |
| Astrophotography | Only with suitable accessories |
| Recommended for | Beginners |
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