![]() When the camera is used in ROI mode, the frame rate can run up to 120fps. HGC (high gain conversion) mode switches on when the gain goes over 120 and this helps to keep the dynamic range constant. The IMX294 is a 4/3-inch, back-illuminated sensor with a diagonal size of 23.2mm and a resolution of 4,144×2,822. In 14-bit mode the camera will run at around 16fps at full resolution and up to 25fps in 10-bit mode. The ZWO 294 MC Pro camera really has something for everyone and with CMOS sensor boundaries being pushed with each new model of camera that comes out, it makes us wonder what new developments will be coming next. This would be ideal for outreach events for showing objects to the public, or for live stacking in capture software. The camera is great for live capture and live stacking of objects, and it was a pleasure to watch a comet cross the screen in real time. The camera was very stable, dropping no frames in the capture software, while using a short capture time of 60 seconds meant we didn’t need to autoguide. To achieve this, we set the camera up in USB 2 mode with a 7m USB extension lead. On the next clear night, we used the camera coupled with a 2.5-inch quad refractor to image M31, the Andromeda Galaxy, and look at some live views of targets. The results were especially impressive because we processed images from a few cameras that week, and the ASI294MC was the only one that picked up any surface detail on Mars. Using the same telescope with the addition of a 4x Powermate we set ROI capture to 640×480.In this mode the camera was recording at around 100fps. The next target was Mars and, to be honest, we were not expecting to capture any surface detail because of the dust storm that was enveloping the planet. Running in Region Of Interest (ROI) mode on Saturn we were able to capture some good detail with the use of an atmospheric dispersion corrector on a 4-inch, f/11 telescope. Switching over to planetary capture a few nights later, the camera performed well under the poor conditions and low views we had this season. Once sorted, the camera produced a fine image on screen and capturing was very easy using the SER file capture mode. While not the fastest camera in full resolution we only needed to capture around 200 frames and stack 50 to produce a decent image of the Moon.
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