I’m having problems guiding - I’m using an ASIair plus and a ZWO 2600 MC duo and I’ve been getting star trails while guiding. When I stop guiding, I get round stars. I can’t work out what’s happening. I’m entering the same focal length for the telescope (616mm) for the guide scope as it’s the duo set up.
The guide screen shows the stars gradually drifting away from the target .
I can’t work out what’s happening. Might it be something to do with calibration, which I thought I was doing correctly, but maybe not. It seems as if it’s not guiding in RA . The guide screen sometimes shows only a red line for dec guiding and the blue RA is absent.

I’m sure I’m making a basic mistake. I’m not an experienced ASIair user and not good with IT. If any of you knowledgeable ASIAIR users out there can help me figure out what I’m doing wrong, I would be very grateful.
l’ve tried to attach screenshots which would be more helpful than my description, not sure if that’s working though.

Thanks in advance
John

    JohnM Hello. Is the mount tracking on? Have you completed the polar alignment before guiding?

      Yes I polar aligned to start with. I was using the AM5N and it was tracking perfectly when I stopped guiding.

        JohnM Hello, John. What are the parameter settings in the following picture?

        In addition, you can also upload a bug report to us so that we can get some clues from your guiding log.

          Not sure if the screenshot has uploaded - the figure is 2000ms for the calibration step, 500 ms for dec and RA.
          I’ve noticed I have had the Auto restore calibration enabled, could that be the issue?
          Sorry but I don’t know anything about bug reports!

          What does your guide calibration graph look like? Top right button on your guide screen (small X Y graph with a target reticule within it icon button). If calibrated correctly your RA and DEC calibration lines should be near perfectly perpendicular to each other. Also you should carry out calibration just above the celestial equator.

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