Bresser N 203/800 NT 203S
Fast Newton for deep and sharp images
The Bresser N 203/800 NT 203S Messier is made for those who want to see more than just the basics. With its powerful 203 mm mirror, it captures a lot of light, making even faint nebulae and galaxies visible. The short focal length of 800 mm (f/3.9) makes it lightning fast - ideal for astrophotography and wide field of view observations.
Sharp images with short exposure time
The parabolic main mirror provides a clean, clear image without distortion. The fast f/3.9 design gives you deeper images with shorter exposure times - perfect for those who enjoy photography. The large capture mirror exposes the entire field of view evenly, so even the corners of your picture remain clear.
Hexafoc: stable, precise and large
The 2.5″ Hexafoc Focuser Makes focusing smooth and stable. No play or wobble, just smooth control. The wide aperture prevents light loss, keeping your image clear and rich in contrast. The T2 adapter makes it easy to connect a camera for sharp, vignetting-free photos.
Solid construction and clever details
The aluminum tube is light but sturdy enough for long-term observations. Large collimation bolts make it easy to adjust the mirrors. The tube rings have a carrying bracket with camera mount, useful for photography. The Vixen swallowtail fits many mounts, so upgrading is no problem.
Ready for advanced
The N 203/800 is designed for those who want to take their hobby to the next level. Whether viewing the rings of Saturn or photographing the Orion Nebula, this telescope offers clarity, speed and control in one compact system.
What to expect
✓ Moon: razor-sharp craters and shadows
✓ Planets: high-contrast images with fine detail
✓ Deep-sky: clear image of nebulae and galaxies
✓ Astrophotography: ideal due to fast f/3.9 aperture
✗ Earth observation: not suitable
✗ Sun: use only with appropriate filter
Specifications
Optics
| Feature | Description |
|---|---|
| Type | Reflector |
| Design | Newton |
| Aperture (mm) | 203 |
| Focal length (mm) | 800 |
| Aperture ratio (f/) | 3,9 |
| Resolution (theoretical) | 0,57″ |
| Limit value (mag) | 13,3 |
| Light output | 840× |
| Max. useful magnification | 406× |
| Tube material | Aluminum |
| Tube construction | Full tube |
| Tube length (mm) | 700 |
| Tube diameter (mm) | 235 |
| Tube weight (kg) | 8,7 |
Reflector
| Feature | Description |
|---|---|
| Main mirror | Parabolic |
| Main mirror material | BK7 |
| Front mirror diameter (mm) | 85 |
| Adjustable | Yes |
| Main mirror ventilation | No |
Focuser
| Feature | Description |
|---|---|
| Design | Hexafoc (2.5″) |
| Free opening (mm) | 64 |
| Ocular connection | 2″ / 1,25″ |
| Connection (camera side) | T2 (M42×0.75) |
| Backfocus (mm) | 60 |
Mount
| Feature | Description |
|---|---|
| Type | OTA (without mount) |
| GoTo steering | No |
| Dovetail | Vixen-style |
| Tube Rings | Yes |
Included accessories
| Section | Description |
|---|---|
| Ocular | SP 26 mm (1.25″) |
| Seeker | 8×50 with reticle |
| Adapter | 2″ / 1,25″ |
| Solar filter | Yes |
General
| Feature | Description |
|---|---|
| Series | Messier |
| Application | Moon & Planets, Nebulae & Galaxies, Astrophotography |
| Sun | Only with suitable filter |
| Recommended for | Advanced |
| Observatory use | No |
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