Discover the RB Focus eXcalibur 3.0™ — the revolutionary solution to automate your calibration frames and keep your optics flawless! Say goodbye to cumbersome dust covers and welcome the era of hassle-free astrophotography.
Equipped with a powerful servo motor, a new Neon LED panel calibrated to the solar light spectrum for natural and uniform illumination, and a 12-bit ADC, the RB Focus eXcalibur is your ultimate ally for remotely capturing Flats frames. Plus, the panel now features an integrated heater to prevent dew formation, ensuring consistent performance even in the most challenging conditions. Say farewell to freezing winter nights juggling different devices—now everything is automated in a single unit!

Its robotic operation allows for automatic or on-demand calibration frames from any capture software compatible with the ASCOM Cover Calibrator standard, such as NiNa 2.x, Voyager, and SGP. We've also upgraded connectivity options to suit your needs, offering everything from classic USB to wireless connections via Bluetooth and BLE through the mobile app.

We understand not all users prefer Windows or may use alternative capture systems, which is why we've designed the RB Focus eXcalibur with cross-platform tools. You can now control the device through our innovative RB Focus Virtual Pad app, coming soon to iOS and Android. This app, unique in the astrophotography world, lets you store brightness presets for different filters, control the panel, and much more—right from your phone, tablet, or iPad!

Thanks to the high-resolution ADC, the panel delivers a wide range of light intensities, allowing you to fine-tune brightness with unmatched precision to achieve perfect flats with just the right ADUs. Your images will be flawlessly flat and free from imperfections, even with the fastest optical systems on the market.

With the new dynamic brightness adjustment available in the latest NiNa update, you can now create a parameter table for each filter and access it directly from the advanced sequencer. You’ll be able to schedule the device to perform all calibration frames at the end of your session—and forget about it until your imaging is done!

Our obsession with design and simplicity led us to create a device that’s incredibly easy to mount and dismount. No complex tools are needed—install it on your OTA in just 3 minutes. When it's time to remove it, simply open the panel, loosen one screw, and slide the module back. The dovetail mounting system guarantees a secure attachment of both the motor and panel to the telescope tube.
Crafted with aluminum and engineering plastics, the RB Focus eXcalibur is built to withstand strong winds. Its dual-arm system provides the rigidity needed to handle even the toughest imaging nights. It’s the perfect solution for both field trips and remote observatories!

Stop wasting time and energy on calibration. With the RB Focus eXcalibur, automation and quality come together for an unparalleled experience. Get ready to capture breathtaking images of the cosmos!