Omegon 2″ to 1.25″ reducer adapter
Looking for a reliable and affordable way to connect 1.25″ eyepieces and accessories to the 2″ focuser of your telescope? The Omegon 2″ to 1.25″ reducer adapter is exactly what you need. With an optical path length of just 1 mm, it causes virtually no focusing complications - simply slide it in and start observing.
Three attachment options for every situation
What sets this adapter apart from cheaper alternatives is the combination of three different ways to secure your accessories - a feature appreciated by beginners and experienced observers alike.
- Brass ring clamp with side screw - the classic solution that provides firm and secure eyepiece retention.
- Recessed set screw - allows you to fix a specific piece of accessories directly to the brass ring for a permanent, locked-in connection.
- Three compression screws arranged symmetrically at 120° - enables quick insertion and removal of eyepieces without any tools. This is an excellent option for fast eyepiece swapping during visual observation or astrophotography sessions.
M48 filter thread and T2 thread on the telescope side
The telescope-facing end of the adapter features two threads, making it highly versatile:
- M48 thread - compatible with standard 2″ filters, so you can easily screw in your favourite nebula, UHC or O-III filter directly into the optical assembly.
- T2 thread - allows you to screw the entire reducer onto any T2 port, whether it is a camera adapter, a focuser with T2 output or other photographic accessories.
Thanks to the combination of M48 and T2 threads, this adapter is exceptionally versatile and suits a wide range of optical setups.
About Omegon
Omegon is a brand born from a passion for astronomy, focused on quality and practicality. Their accessories are designed to perform reliably in real-world conditions - whether you are observing from a city balcony or a dark sky site far from civilization. Omegon offers a wide range of astronomical accessories, from simple adapters and eyepieces to complete astrophotography equipment, all at reasonable prices without unnecessary compromises in build quality. This reducer is a direct example of that philosophy - precise brass clamping, multiple attachment options and useful threads all in one compact component.
Key specifications
| Property |
Value |
| Adapter type |
2″ to 1.25″ reducer |
| Optical path length |
1 mm |
| Attachment methods |
Brass ring clamp, recessed set screw, three 120° compression screws |
| Filter thread (telescope side) |
M48 |
| Photo/accessory thread (telescope side) |
T2 |
| Brand |
Omegon |
