ASToptics SCT/M48 8 mm Adapter
Want to connect M48 accessories to your telescope's focuser? This compact adapter from ASToptics does exactly that. The SCT/M48 adapter connects the male SC thread (UNC 2″-24) on the telescope side to a male M48 thread on the accessory side - all within a total thickness of just 8 mm. The minimal profile keeps it out of the optical path and avoids any problems with reaching focus.
Compatible with Schmidt-Cassegrain and Maksutov-Cassegrain telescopes
This adapter works with nearly all telescopes fitted with a standard male SC thread (UNC 2″-24). That includes the vast majority of Schmidt-Cassegrain telescopes, a large proportion of Maksutov-Cassegrain telescopes, and various other instruments equipped with the same thread. Users of popular models from the world's leading manufacturers will find it a straightforward fit.
What can you connect with it?
The adapter is ideal wherever you need to attach M48-threaded accessories to an SC focuser. Typical uses include:
- Flat field filters and photographic filters
- Field flatteners and focal reducers
- Other optical accessories with a standard M48 (2″ filter) thread
Simply screw the adapter onto your telescope's focuser. On the other side, you get a standard male M48 thread ready to accept a wide range of compatible accessories. A clean, no-compromise solution for everyday work at the telescope.
Precision build quality
Manufactured to ASToptics standards, the adapter fits tightly and holds firm - no play, no slippage. The connection stays secure whether you are observing visually or imaging.
Technical specifications
| Parameter |
Value |
| Brand |
ASToptics |
| Thread - telescope side |
Male SC (UNC 2″-24) |
| Thread - accessory side |
Male M48 |
| Total thickness |
8 mm |
| Compatible telescopes |
Schmidt-Cassegrain, Maksutov-Cassegrain and other instruments with SC thread |
Who is this adapter for?
The ASToptics SCT/M48 adapter suits anyone using a Schmidt-Cassegrain or Maksutov-Cassegrain telescope who wants to expand their accessory options. Whether you are a visual observer looking to add filters or an astrophotographer building a more advanced optical train, this adapter gives you reliable M48 compatibility in a minimal, well-made package.
