Bresser AC 90/500 - Compact power for wide sky images
The Bresser AC 90/500 Messier OTA is light, fast and surprisingly powerful. With its wide field of view, this is the ideal telescope for exploring open clusters, nebulae and the Milky Way. Compact in size, big in performance - perfect for those who like to view the universe wide rather than deep.
Wide field of view, clear images
The 90 mm lens captures a lot of light, so you can see even fainter objects well. The short focal length of 500 mm provides a large field of view. Ideal for capturing large areas of sky at once or easy tracking. This allows you to see star clusters and nebulae in their full glory, without constantly having to make adjustments.
Easy to use and instantly ready
Take it out of the box, attach the eyepiece and you are ready for observation. This telescope is designed for ease of use - no complicated settings, just point and enjoy. Thanks to the robust aluminum tube, everything remains stable even with frequent use.
Versatile design for any experience
Whether you're just starting out or already experienced, the AC 90/500 adapts to your pace. Use it for quick sessions in the garden or take it to a dark place to discover even more detail. Add an Amici prism for daytime nature observations.
What to expect
✓ Moon: bright and contrasty
✓ Planets: clearly visible at lower magnification
✓ Nebulae & galaxies: wide and impressive field of view
✗ Astrophotography: limited without additional accessories
✗ Sun: only with safe sunscreen
Specifications
Optics
| Feature | Description |
|---|---|
| Design | Achromat (refractor) |
| Type | Refractor |
| Aperture (mm) | 90 |
| Focal length (mm) | 500 |
| Focal Ratio (f/) | 5,5 |
| Resolution | 1,28″ |
| Boundary magnitude | 11,6 |
| Light output relative to eye | 170× |
| Max. useful magnification | 180× |
| Tube material | Aluminum |
| Tube length (mm) | 480 |
| Tube diameter (mm) | 105 |
| Tube weight (kg) | 1,9 |
| Tube construction | Full tube |
Focuser
| Feature | Description |
|---|---|
| Design | Rack & Pinion |
| Ocular connection | 1,25″ |
Mount
| Feature | Description |
|---|---|
| Design | OTA (without mount) |
| Type of mount | Manual |
| GoTo steering | No |
Included accessories
| Section | Description |
|---|---|
| Ocular | 26 mm Super Plössl (1.25″) |
| Seeker | 6×30 optical viewfinder |
| Zenith mirror | 1.25″ 90° star diagonal |
| Dew cap | Yes |
| Tube Rings | Yes |
| Dovetail | Vixen-style |
| Accessory holder | Meade/Explore Scientific T-profile |
General
| Feature | Description |
|---|---|
| Series | Messier |
| Application | Moon & Planets, Nebulae & Galaxies |
| Astrophotography | No |
| Nature observation | No |
| Sun | Only with suitable sunscreen |
| Recommended for | Advanced |
| Observatory use | No |
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