Baader Planetarium T2 2mm Lock Nut
Keep Your Optical Train Firmly in Place
The Baader Planetarium T2 2mm lock nut is a precision-machined securing element designed for the standard T2 thread (M42x0.75). Small in size but important in function, it plays a key role in building reliable optical trains for telescopes, cameras and astronomy accessories.
At just 2mm thick, this lock nut takes up minimal space in the optical path. Once you have set your components to the correct position, simply tighten the lock nut and the connection stays firm throughout your entire observing or imaging session.
Why You Need a Lock Nut
The T2 thread is one of the most widely used standards in astronomy optics. It connects CCD and CMOS cameras, focal reducers, filter drawers, field correctors and many other accessories. Without a lock nut, components can shift or loosen during observation or astrophotography - especially when vibration is involved. The result can be loss of focus or an unwanted shift in the field of view.
This lock nut solves that problem directly. You set the position, tighten the nut, and the connection remains stable.
Where This Lock Nut Is Most Useful
- Securing heavy cameras that create extra stress on threaded joints
- Fixing the backfocus distance between optical components for precise, repeatable results
- Keeping connections stable when transporting your telescope in the field
- Building optical trains that need to be reassembled in exactly the same way each time
It suits both beginners setting up their first optical system and experienced observers and astrophotographers who need consistent, stable configurations.
Compatibility
This lock nut fits all Baader Planetarium components with a T2 thread, as well as standard T2 parts from other manufacturers. The T2 (M42x0.75) thread is a universal standard, so this single accessory works across a wide range of equipment.
Technical Specifications
| Thread standard |
T2 (M42x0.75) |
| Thickness |
2 mm |
| Material |
Metal |
| Manufacturer |
Baader Planetarium (Germany) |
About Baader Planetarium
Baader Planetarium is a German manufacturer with decades of experience in astronomy optics and accessories. The company is well known among astronomers and astrophotographers for careful product development, quality materials and precise manufacturing. Their range includes filters, eyepiece accessories, mounts, T2 adapters and much more.
Baader Planetarium products are chosen by those who do not want to compromise on quality - from enthusiastic beginners to professional observatories around the world.
