Bresser AC 102S/600 - Compact powerhouse for wide Deep-Sky images
The Bresser AC 102S/600 Messier Hexafoc OTA is built for those who like to explore the deep sky without the hassle. Thanks to its short focal length of 600 mm and 102 mm aperture, you'll see large nebulae and star clusters clearly and contrastingly. From the Orion Nebula to the Andromeda Nebula - every object fills your field of view with detail and color.

Wide image, clear result
The f/5.9 optics deliver a wide angle of view, perfect for Deep-Sky observations and wide-angle photography. You catch more of the sky in one view, so you don't have to constantly reposition. The high light output makes even faint nebulae visible, while the moon shows its craters and shadows sharply.
Light, fast and easy to use
The low weight and short tube make this a true all-rounder. You take it outside quickly and don't need a heavy mount. Ideal for spontaneous observations or a night under the stars.

Precise focusing with Hexafoc
The large 64 mm Hexafoc focuser offers smooth, stable focusing. Add the optional 1:10 fine adjustment and you can focus even more accurately - useful when observing fine details or photographing bright objects.
What to expect
✓ Moon: sharp edges and high-contrast details
✓ Planets: clear cloud bands and rings
✓ Deep-Sky: broad nebulae and open clusters
✗ Astrophotography: limited without fine adjustment
✗ Earth observation: not suitable
Specifications
Optics
| Feature | Description |
|---|---|
| Design | Achromatic refractor |
| Type | Refractor |
| Aperture (mm) | 102 |
| Focal length (mm) | 600 |
| Focal Ratio (f/) | 5,9 |
| Resolution (theoretical) | 1,13″ |
| Boundary magnitude | 11,8 |
| Light output relative to eye | 210× |
| Max. useful magnification | 204× |
| Coating | Multiple |
| Tube length (mm) | 615 |
| Tube weight (kg) | 3,9 |
| Tube construction | Full metal tube |
Focuser
| Feature | Description |
|---|---|
| Design | Hexafoc (rack & pinion) |
| Ocular connection | 2″ / 1.25″ adapter |
| Free opening (mm) | 64 |
| Camera side connection | T2 |
| Fine adjustment | Optional (1:10 reduction) |
Mount
| Feature | Description |
|---|---|
| Type | OTA (without mount) |
| Compatibility | Vixen dovetail |
Included accessories
| Section | Description |
|---|---|
| Seeker | 6×30 optical viewfinder |
| Ocular | 26 mm Super Plössl (1.25″) |
| Zenith mirror | 1.25″ 90° prism |
| Tube Rings | Yes |
| Handle | Yes |
| Dew cap | Yes |
| Extras | Reducer adapter, star map, Stellarium software |
General
| Feature | Description |
|---|---|
| Series | Messier |
| Application | Moon & Planets, Nebulae & Galaxies |
| Astrophotography | Limited suitability |
| Nature observation | No |
| Sun | Only with suitable sunscreen |
| Recommended for | Advanced |
| Observatory use | No |











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