Omegon M48 Extension - More play space, perfect image
Omegon M48 20mm Extension Piece gives you exactly those extra millimeters you need to set your camera or corrector at the right distance. No more forced back focus. You achieve sharpness all the way to the corners, without vignetting or tilt.
Simple and firm coupling
Both sides have a wide M48x0.75 thread. Screw your flattener, reducer or camera directly onto it. Everything sits tight and stays perfectly centered.

Completely black inside
Deep blackened interior and sharp threads prevent stray light and reflections. This keeps your contrast high even in bright objects.
Compact and light
Only 51 mm in diameter and all aluminum. Adds almost no weight and fits nicely into your existing train.
What we recommend
✓ Backfocus precise adjustment: ideal for 20 mm extra
✓ M48 flatteners, reducers and cameras: directly compatible
✓ Critical astrophotography: keep everything straight and scatter-free
✗ T2 systems: then use a T2 extender
Specifications
Capacity
| Feature | Description |
|---|---|
| Wire | M48 |
| Optical length (mm) | 20 |
| Camera side connection | M48x0.75 |
| Telescope connection | M48x0.75 |
General
| Feature | Description |
|---|---|
| Type | Adapters |
| Design | Extension |
| Diameter (mm) | 51 |
| Color | Black |
| Material | Aluminum |





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