Ah yes that's it thanks. I am experimenting on the lines you mention and having the focus images will really help.

I have just logged a bug that I thought was an Auto Focus issue but now I am not so sure after turning on more de-bugging. Last night I set up just a capture sequence (not a job) to take RGBL images in that order. Because I have problems auto focussing, I decided to turn off most events that trigger auto focus. It took 10 x RGB images and when it got to L an auto focus was triggered because it was the 30th frame. The auto guider failed to get an image so aborted then capture aborted as well and that was it, no more imaging for the night. I think it's to do with the ZWO driver using 2 ZWO cameras. You may not be interested in camera driver issues but would quote you the forum topic number if I could find it.

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