Omegon Variable Projection Adapter 2″/T2
Do you want to photograph planets or the Moon at high magnification through your telescope? A projection adapter for eyepiece projection is exactly what you need. The Omegon 2″/T2 adapter lets you use your existing eyepiece as a projection element in the optical system and transfer the image directly to your DSLR camera sensor - no additional accessories required.
Design and compatibility
The adapter features a 2″ input with an internal clamping mechanism that holds eyepieces of standard and larger barrel diameters securely in place. On the output side, a T2 thread lets you attach the T-ring that matches your camera's lens mount. The adapter works with all standard 2″ eyepieces, including those with larger bodies.
The T2 output is an industry standard. T-rings are available for most popular camera mounts, including Canon EF, Nikon F, Sony Alpha, Pentax K and others. Before use, make sure your telescope focuser accepts a 2″ barrel and that your optical setup can reach focus with the camera attached.
Variable optical length - the key feature
The most important feature of this adapter is its variable optical length of 63-97 mm. This range lets you adjust the final magnification and tailor the projection to your specific combination of eyepiece, telescope, and focal length.
Eyepiece projection works by using the eyepiece not to form an image for your eye, but to project it directly onto the camera sensor. The resulting magnification depends on three factors: the focal length of the eyepiece, the focal length of the telescope, and the distance between the eyepiece and the sensor. You control this distance by adjusting the length of the adapter. A greater distance gives higher magnification, and the 63-97 mm range gives you enough flexibility for both experimentation and fine-tuning.
Who is this adapter for?
Moon and planetary astrophotography using eyepiece projection is one of the most effective techniques for getting the maximum detail from your existing equipment. This adapter suits both beginners and more experienced astrophotographers who want to extend the capabilities of their telescope without investing in dedicated high-end optics.
Summary of key features
- Input: 2″ barrel with internal clamping mechanism
- Output: T2 thread for T-ring attachment
- Variable optical length: 63-97 mm
- Compatible with all standard 2″ eyepieces and larger-body eyepieces
- T-rings available separately for Canon EF, Nikon F, Sony Alpha, Pentax K and others
- No additional accessories needed between eyepiece and camera
Technical specifications
| Parameter |
Value |
| Eyepiece barrel size |
2″ (50.8 mm) |
| Camera connection |
T2 thread |
| Variable optical length |
63-97 mm |
| Clamping mechanism |
Internal (compression ring) |
| T-ring included |
No (sold separately) |
How to use this adapter
- Insert your 2″ eyepiece into the adapter input and tighten the clamping mechanism.
- Attach the correct T-ring for your camera mount to the T2 thread on the output side.
- Fit the camera to the T-ring.
- Insert the assembled unit into your telescope focuser.
- Adjust the adapter length to change the magnification and reach focus.
- Focus using the telescope focuser and capture your images.
Get more from your telescope
Thanks to its variable optical length and robust clamping mechanism, the Omegon 2″/T2 projection adapter is a reliable tool for anyone who wants to combine eyepiece projection with digital photography. It is a straightforward and affordable way to achieve high effective focal lengths and capture impressive detail of the Moon and planets with equipment you already own.
