Omegon Reducer 0.7x for 72/400 Quintuplet APO: your APO faster and wider
This reducer belongs to a telescope: the Omegon Pro APO 72/400 Quintuplet OTA. It shortens the focal length by a factor of 0.7x while simultaneously correcting the field of view, tailored to the lens design of this exact model.
For the owner of this tube, this is therefore the shortest route to a second, faster configuration: attach a reducer and the same telescope photographs wider fields in a shorter time.




Calculated with exactly this perspective
A universal reducer is always a compromise: it does not know the field curvature of your objective lens. This reducer is calculated for the Pro APO 72/400 Quintuplet OTA and therefore exactly corrects the curvature and residual aberrations introduced by that optics.
The result is a reduced and corrected field: stars remain round into the corners, even on larger sensors.

What the factor 0.7x yields
After reduction, the telescope operates at 280 mm at f/3.9. The field of view becomes wider and the exposure time per shot shorter, allowing you to collect more signal in the same night.
The back focus follows the industry standard of 55 mm: common combinations of filter drawer, filter wheel, and camera fit without calculations.

Internal filter wire
There is an internal M48 filter thread on the camera side. A dual-band or light pollution filter screws directly into it, without a separate filter drawer in the backfocus.
Included
- Pro Reducer 0.7x
Featured accessories
Exclusively for the Omegon Pro APO 72/400 Quintuplet OTA. The reducer is for photographic use; maintain the 55 mm back focus exactly for pinpoint stars into the corners.
For whom yes and for whom no
- ✓ Owners of the Omegon Pro APO 72/400 Quintuplet OTA
- ✓ Astrophotographers who want shorter exposure times
- ✓ How to search for expansive fields without a second telescope
- ✗ Other telescopes, also within the Pro line: each reducer belongs to a model
- Visual use: this reducer is for photography
Specifications
| Suitable for | Omegon Pro APO 72/400 Quintuplet OTA |
| Reduction factor | 0,7x |
| Focal length after reduction | 280 mm (f/3.9) |
| Telescope silk | M68 |
| Camera side | M48 x 0.75 |
| Backfocus | 55 mm |
| Visually deployable | No |
| Filter thread | Internal M48 |
| Coating | Fully multicoated |
| Weight | Approximately 400 g |
| Material | Aluminum, black |
You can find more correctors and reducers for this merk on the Omegon merk Page.








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