Omegon 2″ Twist-lock adapter
You know the situation: you insert an expensive eyepiece into the focuser and tighten the set screw - but instead of sitting precisely on axis, it ends up slightly tilted, or worse, the screw leaves an ugly scratch on the barrel. This does not have to be your problem. The Omegon Twist-lock adapter solves both issues at once: it ensures precise centering of your accessories while holding them firmly without a single scratch. One twist is all it takes before you start observing.
Precise centering and secure hold without scratching
The 2″ Twist-lock adapter with SC thread was designed to automatically center accessories exactly on the optical axis. Instead of a single point of pressure from a set screw, the adapter grips the barrel uniformly around its entire circumference - evenly and gently. As a result, the eyepiece or camera sits without any tilt, exactly where it should be.
The adapter is compatible with all standard 2″ focusers. Thanks to the SC thread, it can also be connected directly to the tube of a Schmidt-Cassegrain, Edge-HD or ACF telescope - without the need for any additional adapters.
Built-in 2″ filter thread - one set of filters for everything
The adapter features a standard thread for 2″ filters, which brings a very practical advantage: even when using a 1.25″ eyepiece, you can screw a 2″ filter directly into the adapter. This is especially useful when buying filters - you do not need to purchase the same filter in two sizes. One set of 2″ filters covers your entire setup. This seemingly small feature can save a considerable amount of money in practice.
Anodized aluminum construction - reliable grip even in gloves
The adapter is made from anodized aluminum combining a black interior and a gold exterior. This combination is not merely an aesthetic choice - the gold locking ring provides an excellent grip even when wearing gloves on cold nights under the stars. The total weight of 180 g reflects a solid yet compact construction.
Technical specifications
| Parameter |
Value |
| Barrel diameter |
2″ |
| Thread |
SC (Schmidt-Cassegrain) |
| Filter thread |
2″ |
| Dimensions |
74 x 74 x 80 mm |
| Optical length |
44 mm |
| Total height |
80 mm |
| Weight |
180 g |
| Material |
Anodized aluminum |
| Compatible telescopes |
Schmidt-Cassegrain, Edge-HD, ACF |
Direct connection to SCT, Edge-HD and ACF telescopes
The 2″ connector can be unscrewed from the body of the adapter, revealing the SC thread underneath. This makes the adapter an ideal eyepiece holder for use directly with Schmidt-Cassegrain, Edge-HD and ACF optical tubes. When working with these optical systems, a filter wheel, camera or rotator is often attached to the focuser - assemblies with considerable weight. The Twist-lock connection ensures a secure hold without any distortion of the optical axis, which is absolutely critical in astrophotography.
Who is this adapter for?
The Omegon 2″ Twist-lock adapter is a practical and reliable choice for:
- Visual observers who want their eyepiece sitting precisely on axis every time
- Astrophotographers connecting cameras or filter wheels to SCT, Edge-HD or ACF telescopes
- Anyone tired of set screw scratches on expensive eyepiece barrels
- Observers looking to simplify their filter setup with a single set of 2″ filters
Whether you observe visually or photograph deep sky objects, the combination of SC thread, 2″ filter thread and a gentle clamping mechanism makes this adapter a versatile accessory that fits a wide range of telescopes. With this adapter, you can be confident that your equipment stays exactly where it should - without scratches, without tilt, without compromise.
