Omegon T2 (Male) to 1.25″ Adapter
Connect Your 1.25″ Accessories to Any T2 Thread
The Omegon T2 to 1.25″ adapter is a precision-machined reduction fitting that connects standard 1.25″ eyepieces and accessories directly to the T2 thread of your telescope or focuser. It is an essential piece of equipment for any astronomer who wants to combine different optical components with ease. Its compact size and straightforward fitting make it suitable for both visual observation and astrophotography.
Key Features
- Brass compression ring on the 1.25″ side - holds accessories securely without scratching or slipping
- Two locking screws for added stability - prevent rotation and accidental release
- Black anodised finish - eliminates internal reflections and protects against corrosion
- Additional T2 male thread on the barrel - allows connection of T2 extension tubes, filters, and other T2 accessories
- Compatible with refractors, reflectors, and catadioptric telescopes from most manufacturers
- Precision-machined threads for reliable, repeatable centring
Versatile Use in Astronomy
This adapter is designed for a wide range of applications. On the eyepiece side, you get a standard 1.25″ barrel opening secured by a brass compression ring. An additional T2 male thread on the adapter body lets you attach T2 extension tubes, filters, or other T2 accessories - significantly expanding what you can build with your setup.
Eyepiece Projection Photography
Eyepiece projection is one of the most effective methods for planetary astrophotography. You place an eyepiece in the optical path between your telescope and camera to increase the magnification of the image. This adapter fully supports the technique - simply attach a T2 extension tube, insert your chosen eyepiece, and you are ready to capture detailed images of planets, the Moon, or double stars at high magnification.
Build Quality and Compatibility
The adapter is made from metal throughout, with precisely cut threads that guarantee long service life and accurate centring every time you use it. The black anodised surface prevents stray light from entering the optical path and keeps the adapter looking good after years of use.
It is compatible with the vast majority of modern and older telescopes fitted with a standard T2 thread. You can use it with equipment from Sky-Watcher, Bresser, Omegon, and many other brands without any modification.
Technical Specifications
| Parameter |
Value |
| Eyepiece barrel diameter |
1.25″ (31.7 mm) |
| Thread type |
T2 (M42 x 0.75) |
| Thread side |
External |
| Securing mechanism |
Brass compression ring + two locking screws |
| Additional thread |
T2 internal for extensions and filters |
| Finish |
Black anodised aluminium |
| Compatible telescope types |
Refractor, reflector, catadioptric |
Who Is This Adapter For?
If you want a reliable way to connect your 1.25″ eyepieces and accessories to a T2 thread, this adapter is an ideal choice. Its simple operation, solid metal build, and additional T2 male thread make it one of the most versatile adapters available for astronomy. Whether you are just starting out or building a more advanced optical setup, this adapter will serve you well.
About Omegon
Omegon is an established European brand focused on designing and distributing astronomical equipment, optics, and accessories for astronomers at every level. Omegon products are well regarded for their reliability, precise build quality, and excellent value for money. From eyepieces and mounts to complete telescopes and adapters, Omegon offers equipment that meets the needs of both entry-level observers and experienced amateurs. The brand regularly expands its range with new and innovative products, making quality astronomy accessible to as many enthusiasts as possible.
