CHF 359.00incl. Swiss VAT
Will be ordered for you
Timeframe: 10 days to 3 weeks
Estimated shipping: Between November 24 and 29, 2026
The Celestron optical splitter is an essential accessory for achieving precise tracking with long-focal-length instruments, such as Schmidt-Cassegrain, EdgeHD, or other telescopes used in demanding astrophotography.
Unlike a separate guide scope, the optical splitter captures a small portion of the main instrument’s focal plane using a built-in prism. The guide star is therefore captured directly within the same optical path as the image being acquired. As a result, errors caused by mechanical flexure, alignment differences, or aberrations between the two instruments are significantly reduced.
With an optical divider, every movement detected on the guide star corresponds directly to the actual movement of the image captured by your main camera. This improves tracking accuracy, especially with long focal lengths, where even the slightest error becomes visible.
The result is simple: sharper images, more stable tracking, and more clearly defined stars, even during long exposures.
Optical splitters have been around for a long time, but they have often had a reputation for being difficult to use. Narrow field of view, dim guide stars, tricky focusing, complex setup… Celestron offers a much more practical and versatile solution here.
The Celestron optical splitter features a 12.5 mm large prism, with depth adjustment within the focal plane. This adjustment allows the prism's position to be precisely tailored to the camera being used, in order to capture more light without encroaching on the main imager's field of view.
The guidance camera features a independent focus ring, with an 8 mm travel. This system allows for fine-tuning the sharpness of the guide star without having to disassemble the assembly or rotate the entire optical splitter.
This is a real advantage in the field, especially when you're trying to keep your setup rigid, stable, and perfectly aligned.
The Celestron optical splitter comes with several adapter rings, allowing for easy integration into a wide range of astrophotography setups. It can be used with astronomical cameras, SLR cameras, and various standard threads.
In terms of instruments, it offers direct compatibility with telescopes Schmidt-Cassegrain and EdgeHD, as well as with M42, M48, and SCT threads.
| Free opening | 48 mm |
| Prism | 12.5 mm, height-adjustable |
| Test Run of the Guidance Camera | 8 mm |
| Instrument-Side Mounting | M42 T2 thread, M48, SCT / EdgeHD |
| Installation of a guidance camera | 31.75 mm bore and T2 thread |
| Imager Assembly | M42 T2 thread and M48 |
| Adapters included | M48 female, M42 female, M48 male, M42 male, and 3 T2 extension tubes |
This optical splitter is particularly recommended for long-focal-length astrophotography, where guiding with a guide scope can reach its limits. It is ideal for users of Celestron SC and EdgeHD telescopes, but also works well with many other setups thanks to the included adapters.
If you're looking for a guiding solution that's sturdier, more precise, and better suited for long focal lengths, the Celestron optical splitter is an excellent choice for ensuring the reliability of your acquisitions and improving the final quality of your images.
