Omegon Pro Reducer 2.5-inch 0.8x Full Frame for RC Telescopes: full-frame reduction for the larger RC
Where the 2-inch RC reducer serves smaller sensors, this 2.5-inch version is designed for full-frame. The generous clear aperture illuminates the entire sensor without vignetting and the three-element optics keep stars round right into the corners.
The 0.8 focal reducer brings an f/8 RC to f/6.4: almost forty percent shorter exposure times and a wider field, without purchasing another tube.







Three lenses, fully multicoated
The three-lens system corrects field curvature while reducing. The full multi-coating keeps reflections of bright field stars out of the image.

For the larger RC tubes
The 2.5-inch build matches the wider focal lengths of larger RC cameras, where a 2-inch reducer would already cut off the beam of light before the sensor reaches it.
Included
- Pro Reducer 2.5 inch
Featured accessories
For Ritchey-Chretien telescopes with a 2.5 inch or wider connection and full-frame cameras. Maintain the recommended sensor spacing for correction to the corners.
For whom yes and for whom no
- ✓ RC owners with full-frame cameras
- ✓ Who is looking for shorter exposure times on a large RC
- ✓ Astrophotographers experiencing vignetting with 2-inch reducers
- ✗ Smaller sensors on smaller RC’s: the 2 inch version is sufficient
- ✗ Visual observers: this is a photographic reducer
Specifications
| Suitable for | Ritchey-Chrétien telescopes |
| Reduction factor | 0.8x (f/8 to f/6.4) |
| Format | 2.5-inch |
| Sensor format | Full-frame dead |
| Optics | 3 lenses, fully multi-coated |
| Weight | 400 g |
You can find more correctors and reducers for this brand on the Omegon brand page.











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