Omegon M48/T2 Male-to-Male Thread Adapter
This adapter converts a male M48 thread to a male T2 (M42×0.75) thread and solves one of the most common problems when building an optical train - mismatched threads between accessories. The optical length is 2 mm, so you need to include this value when calculating your back focus distance.
What this adapter does
Thread mismatches are a frequent issue when connecting telescope accessories. This compact Omegon adapter bridges the gap between M48 and T2 thread standards quickly and securely, without the need for additional components.
Key features
- Converts male M48 thread to male T2 (M42×0.75) thread
- Optical length: 2 mm - include this in your back focus calculation
- Compact and lightweight design
- Compatible with a wide range of telescope accessories and cameras
Who needs this adapter
If you are connecting a camera, filter, or other accessory to your telescope and the threads do not match, this adapter provides a straightforward solution. It is particularly useful in astrophotography setups where precise back focus distance matters.
Technical specifications
| Parameter |
Value |
| Input thread |
M48 (male) |
| Output thread |
T2 - M42×0.75 (male) |
| Optical length |
2 mm |
| Brand |
Omegon |
Good to know before you buy
Always account for the 2 mm optical length of this adapter when calculating the total back focus distance of your optical train. Even small differences in back focus can affect image sharpness, especially in astrophotography.
