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The QHY9 uses a shutter so I don't know about the white lines in the data when downloading.
I have noticed that the blue channel is more bloated than the red or green channel when I process the QHY9 data and I thought that it may help with the binning as a number of imagers bin RGB 2x2.
Will be having my first attempt at Ha tomorrow night so am prepared to try lots of things while in the learning process.
Frank
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