ASIAir plan mode causes image center shift after meridian flip

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lucasjacobson avatar

I’ve noticed a strange behavior in ASIAir when using “plan” vs “autorun”, or it may be a with a session built using planetarium mode. If I set up a plan using the planetarium mode, my image center is not the same after the meridian flip. It’s not way off, but enough to throw away 5-10% of the image. This behavior does does not occur if I center the frame and start the same imaging session using “autorun”.

Any Idea what I might be doing wrong?

John Walsh avatar

lucasjacobson · Oct 17, 2025, 07:22 PM

I’ve noticed a strange behavior in ASIAir when using “plan” vs “autorun”, or it may be a with a session built using planetarium mode. If I set up a plan using the planetarium mode, my image center is not the same after the meridian flip. It’s not way off, but enough to throw away 5-10% of the image. This behavior does does not occur if I center the frame and start the same imaging session using “autorun”.

Any Idea what I might be doing wrong?

I believe the issue(which I have seen manifest in the same manner as you) is the tolerances in the ASIAIR on platesolving. They seem a bit loose but they cannot be set as the can be (I believe) in NINA.
Perhaps the tolerances are different in Autorun vs Plan mode but I would have no idea how to find that out as I’m sure it is buried somewhere in the software’s code