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Hey all, I'm starting to do a lot more solar imaging and lunar imaging with a dash of planetary. Either way, especially with solar surface, I'm often needing to crank FPS as high as I can. I'm soon to buy a new camera (mono) so that I can get higher sensitivity, but until then, I'm wondering: 1. Using ASI178MC currently (6.4MP; USB3). I'm not ever getting 30FPS at it's maximum resolution using RAW16. I get 12FPS tops.
3. I can get higher FPS by using ROI, incrementally getting higher FPS as scaling resolution ROI down. Maxes out around 116 FPS or so, real world, from testing, around the 640x480 area. I'm mainly curious why I can't get the ASI178MC at RAW16 and full resolution, no binning, to achieve 30 FPS with 10ms exposure time even on an SSD. I certainly do not need 6.4MP nor do I need 16 bit, and I can use ROI or binning to speed things up. But I'm curious, why I am barely hovering 50% of the rated ability of the camera. Real world, I'm imaging in Mono 8 bit, bin 2x2, Gain 300, 5 ms to 10 ms exposure time just to get nominal 30~45 FPS. Considering:
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I had the same problem with my ASUS HDD. I had to purchase and install a high speed SSD into my laptop. Now I can get up to ~ 170fps with my ZWO ASI174mm. Also, if you are going to be doing monochrome imaging of the sun, you will gain a lot of speed (by having more light available, decreasing exposure time.) when you upgrade to the mono camera and utilize the entire sensor. John |