Satellite Tracks in ASIAIR Live Stack

MikeC3

I noticed when using the ASIAIR Pro Live stacking mode that satellite tracks persist for much longer than I would expect if each new frame is being averaged with past and future frames. For example, last night during a capture session for M81 using 1-minute subs for a total of 52 frames, there were satellite tracks in frames 15 and 21, yet the tracks persisted through the last frame (52) of the stacked image.
My question is shouldn’t the satellite tracks have been fully averaged out after a few frames or at least after another 30 frames were added to the stack? Or am I missing something with how stacking algorithms work? The satellite tracks did grow dimmer toward the end, but one of them was still very prominent. I don’t see any settings in ASIAIR app. that might resolve this issue.

astrosatch

The bright ones will always be there no matter how many subs you take. There is way to heal those lines in postprocessing without any trace. But the best aproach is still stacking subs sepparately and discard those with trails or use standard deviation algorithm.

MikeC3

astrosatch Thanks for your input. I just stacked the subs using Deep Sky Stacker set to averaging mode and confirmed the brightest of the two satellite tracks still showed up . However, all tracks were removed using a fairly minimal Kappa-Sigma clipping setting (4 sigma, 1 iteration) in DSS. There probably should be a satellite track removal option added to ASI Live Stack as there will be an increasing amount of tracks over time as more satellites are launched. The tracks can ruin a good, standalone stacked image Maybe a future enhancement recommendation.