Baader Budget Eyepiece Clamp -1.25"/T-2
- Adapts T-2 (M42x0.75) Threads to a 1.25" Eyepiece Holder
- Provides a Standard 1.25" Receptacle for Eyepieces and Accessories
- Part of the Baader Astro T-2 System
- Cost-Effective and Compact Design
The Baader Budget Eyepiece Clamp provides a direct and reliable mechanical connection between any component of the Baader T-2 system and a standard 1.25" eyepiece or accessory. It is the most straightforward way to terminate a T-2 threaded accessory, like a diagonal or filter wheel, with a secure holder for visual observation. This clamp is engineered for simplicity and function, offering a compact and cost-effective solution for integrating 1.25" format accessories into your T-2 setup.
This eyepiece clamp serves a fundamental role within the modular Baader Astro T-2 System. Its female T-2 threads allow it to attach directly to T-2 diagonals, extension tubes, off-axis guiders, and other components, converting them to accept 1.25" eyepieces. This makes it an indispensable part for creating custom visual-backs or adding a simple eyepiece port to an imaging train for alignment and centering.
While Baader's premium ClickLock clamps offer a self-centering, twist-lock mechanism that prevents marring eyepiece barrels, the Budget Eyepiece Clamp prioritizes simplicity and affordability. The primary trade-off is the locking mechanism; this clamp uses a traditional method that is effective but lacks the convenience and uniform pressure of the ClickLock system. For observers who need a lightweight, low-profile, and economical T-2 to 1.25" adapter for a dedicated setup, the Budget Clamp is the practical choice.
The primary function of this Baader clamp is to adapt any accessory with a male T-2 (M42x0.75) thread into a female 1.25" receptacle. This allows you to insert standard 1.25" eyepieces, Barlows, or other visual accessories into a T-2 threaded component like a diagonal or filter wheel.
The main difference is the locking mechanism. The Budget Clamp uses a simple, direct locking method. The ClickLock clamp features a more advanced twist-to-lock system that provides perfectly centered, uniform pressure without marking your eyepiece barrels. The Budget Clamp is a more compact and economical solution, while the ClickLock offers superior ergonomics and security.
Yes, absolutely. The Baader T-2 Prism Star Diagonal is a perfect application for this clamp. You can thread the Budget Clamp directly onto the eyepiece-side T-2 thread of the diagonal to create a simple and secure 1.25" visual back.
The Baader Budget Eyepiece Clamp is designed to be a low-profile adapter. While it does add some optical length, it is one of the more compact ways to convert a T-2 thread to a 1.25" holder, making it a good choice for systems with limited back focus. For a precise value, you would need to consult the Baader T-2 system chart for its exact optical length.
You can connect it to any accessory that features a male T-2 thread. This includes a wide range of components from the Baader Astro T-2 System, such as:
No, this clamp is designed specifically for holding relatively lightweight 1.25" visual accessories like eyepieces and Barlow lenses. It is not recommended for securing heavier items like DSLRs or dedicated astronomy cameras, which require a more robust, threaded connection to prevent flexure and ensure safety.
| Net weight (kg) | 0.03 |
| Screw Type | M4 clamping screw |
| Compatible Brands | Astro T-2, UNC, Baader Planetarium, Celestron |
| Clamping System | Screw clamps |
| Inner Diameter / Clear Aperture (mm) | 31.75 (1¼") |
| Outer Diameter | 45 |
| Type of Adapter | Eyepiece Clamp |
| Optical length (mm) | 23.5 |
| Usage | for rotation clamping |
| Inner Connection (eyepiece/-camera-sided) | ø 1¼" (31.75 mm) |
| Inner Connection (lens sided) | M42 x 0.75 (T-2) |