Omegon 203/800 Telescope Pro -. Maximum control for serious astrophotography
The Omegon Pro Astrograph 203/800 Carbon is made for those who want to capture more detail. More light. More sharpness. More depth. This astrograph combines a large aperture with a stable carbon tube and precise mechanics. This keeps your image reliably sharp, even during long exposures.
Fast f/4 optics for faint deep-sky objects
With an aperture ratio of f/4, you work quickly and efficiently. You collect a lot of light in a short time. That makes this telescope ideal for nebulae, galaxies and fine structures. Even faint details come out clearly, without extremely long exposures.
Carbon tube keeps your focus
Temperature changes during the night. Your focus doesn't. The carbon tube has extremely low expansion and prevents focus shift. Thus, stars stay sharp from start to finish. This is especially important in automated sessions and long shooting sequences.
Accurate 2″ Rack & Pinion focuser
The 2″ R&P focuser operates smoothly and without backlash. With 50 mm of adjustment travel and a 1:10 fine adjustment, you focus precisely. Even heavy cameras remain stable. The M56 threaded connection allows you to mount your camera without backlash and perfectly centered.
More light thanks to high-quality mirror coating
The parabolic main mirror has a reflectivity of 94%. That extra light really makes a difference in faint objects. Your images get more contrast and more detail, especially in the outer regions of nebulae and galaxies.
CNC-milled rings for absolute stability
The tube rings and dovetail are CNC-milled from aluminum. This prevents flex and keeps your field of view perfectly aligned. Even with heavy accessories, everything remains stable. Ideal for long exposures and mosaic shots.
Compact design with great performance
Despite its size, the 203/800 remains surprisingly manageable. The compact design reduces the load on your mount and improves balance. Thus, this astrograph integrates effortlessly into a fixed mount or a mobile setup.
What we recommend
✓ Astrophotography: excellent
✓ Nebulae & Galaxies: very suitable
✓ Moon & Planets: well possible
✗ Nature observation: not suitable
✗ Beginners: not recommended
Specifications
Optics
| Feature | Description |
|---|---|
| Type | Reflector |
| Design | Newton |
| Aperture (mm) | 203 |
| Focal length (mm) | 800 |
| Aperture ratio (f/) | 4 |
| Resolution (arcsec) | 0,58 |
| Limit value (mag) | 13,3 |
| Light output relative to eye | 820× |
| Max. useful magnification | 400× |
| Tube material | Carbon |
| Tube length (mm) | 697 |
| Tube diameter (mm) | 235 |
| Tube construction | Full tube |
| Coating | Aluminum & silicon dioxide |
Reflector
| Feature | Description |
|---|---|
| Head mirror design | Parabolic |
| Main mirror material | BK7 |
| Reflectivity | 94% |
| Capture mirror diameter (mm) | 70 |
| Obstruction catch mirror (%) | 35 |
| Main mirror ventilation | No |
Focuser
| Feature | Description |
|---|---|
| Design | Rack & Pinion |
| Ocular connection | 2″ |
| Reduction | 1:10 finesse |
| Connection (camera side) | M56 |
| Adjustment range (mm) | 50 |
| Ring clamp | Yes |
Mount
| Feature | Description |
|---|---|
| Design | OTA |
| Type of mount | Without mount |
| GoTo steering | No |
Included accessories
| Section | Description |
|---|---|
| Tube Rings | Yes |
| Eyepiece adapter | 1,25″ & 2″ |
| Dovetail | Losmandy-Style |
General
| Feature | Description |
|---|---|
| Series | Pro Astrograph |
| Variant | 203/800 Carbon |
| Total weight (kg) | 7,5 |
| Color | Black |
| Dimensions (l×w×h mm) | 700 × 290 × 350 |
| Observation goals | Astrophotography, Moon & Planets, Nebulae & Galaxies |
| Sun | Not recommended (only with appropriate sunscreens) |
| Recommended for | Advanced |
| Observatory use | No |
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