OCAL Version 4.0 - Electronic Collimator with improved Performance
The OCAL collimator version 4.0 is ideal for the collimation of Schmidt Cassegrain telescopes, RC and CDK telescopes, hyperbolic astrographs and Newtonians
- Quick and easy: Collimate your instrument in just 4 steps!
- Can check if the center mark on the primary mirror is made correctly or not.
- Increased level of pixel accuracy, also suitable for Newtonians faster than f/5
- T2 thread (M42x0.75) to minimize installation errors
- Comes with two adapters for easier installation to the telescope
- Thanks to the collimation assistance feature the result is shown immediately on the screen.
- You can also use the screenshot feature to save the result of the collimation.
- Comes with OTG adapter for the USB connection to an Android smartphone
The OCAL 4 Electronic Collimator is a revolutionary new device for collimating reflecting telescopes with the aid of powerful and easy to use software. With the aid of precise calibration guides, the OCAL makes the daunting task of collimation a breeze.
The new 4 version offers some enhancements of the predecessor while retaining its the core stability. With an aperture slightly reduced, the 4.0 version brings several significant advantages.
Superior Image Quality: with a higher pixel density and advanced CMOS technology, the 4.0 reaches significantly better image clarity and detail, improving the 3.0MAX in visual fidelity and precision.
Optimized Display: a redesigned 4:3 screen ratio provides a more accurate view of the internal structure of the telescope, offering a users clearer and more intuitive observation angles compared to the previous 16:9 format of the 3.0MAX.
Enhanced Stability: without changing the 3A process and precision assembly, the 4.0 offers a more compact design and reduction in weight to boost durability. The result is a stronger device which preserve calibration accuracy if minor impacts occur during regular usage.
Refined Design: a new red casing and newly circular markings have been instroduced to make easier to identify reflective surface of the calibrator.
OCAL4.0 electronic collimator |
OCAL3.0MAX electronic collimator
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Compatible with Windows
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YES |
YES |
Compatible with MacOSX
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YES | |
Compatible with Android (Samsung) | YES | YES |
Compatible with iOS |
NO | Under development |
Includes adapter |
YES | YES |
Clarity | Standard | High |
Aperture size
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Small | Large |
Accuracy | Standard | High |
Features
- High quality control ensures each Collimator has perfect pixel level accuracy.
- Included M48 female adapter allows tilt-free connection to the telescope.
- Supports both Windows and Android operating systems.
- Collimation errors can be caused by the different visual axis of human eyes when using traditional collimation tools. This can be totally eliminated by the OCAL electronic collimator.
- The OCAL electronic collimator can solve the problem of collimating large telescopes, with the real-time result shown on the screen.
- The easy 4 step collimation process is suitable for beginners and experience users alike.
- The OCAL electronic collimator can also check if the centre mark of the primary mirror is correct or not.

Specifications
Connection telescope side |
M48 x 0.75 female |
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Supported operating systems | Windows 7 and above, Android |
USB interface |
USB type A |
Weight |
134 g |
SKU |
OC-COLLV4 |
Items included
Downloads
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