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Risingcam IMX571c prominent dust motes


tomato

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I did some tests last night with the RisingCam IMX571/Esprit 150 in poor conditions (some thin cloud, nearby 90% illuminated moon) and the subs look like this:

RC_2022-04-13_22-42-23_-15.00_120.00s_0008-St.thumb.jpg.d427d0c7b3d5beb2d74393403f7551f1.jpg

Fair enough, you might say, the dust bunnies are visible due to the poor quality background. However, the QHY268c on the other Esprit 150 was downloading subs like this:

QHY_2022-04-13_22-42-13_-15.00_120.00s_0008-St.thumb.jpg.7fbda08eda6e740bcaf980783d2122f3.jpg

An equally light polluted background but the dust bunnies are much less apparent. I'm trying to run these cameras as close as I can to have the same image capturing properties, with the RC at 100 Gain, 900 offset in High Gain mode, and the QHY at Gain 30, Offset 30 in DSO mode. I don't believe the QHY sensor window is free of dust particles so is it just that the RC is more sensitive compared to the QHY with these settings?

Edited by tomato
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