Re: New Feature : Planetary Live Stacking
Posted: Thu Jan 04, 2024 1:07 pm
Hi Mike,
thanks for the update - can you just confirm whether the images above are individual frames or saved live stack images (I suspect the latter). If that's the case then it looks like the alignment routine isn't coping with the shift of the image very well. Part of that could be that the area currently used for surface alignment is the middle of the frame, and that's a bit of a low contrast, low detail area in this case. If you re-align so that some sort of feature like a sunspot group is in the middle of the frame then that might well help. I'm currently working on a multi-point alignment and stacking option, which will help address this sort of problem.
Another thing that's worth checking is that the stacking rate (shown on the left hand side of the live stack area) matches the 60fps being delivered from your camera. It's possible that the CPU may not be able to keep up with stacking at 60fps and may be only processing some of the incoming frames.
One more thing to think about is the option of how long to use for calculating quality statistics (on the filtering tab). If this is set to a high value then you can end up with long periods with no frames added to the stack if the quality drops. In general this is probably best set to a value similar to the number calculated from stack length * 100 / percent to keep.
cheers,
Robin
thanks for the update - can you just confirm whether the images above are individual frames or saved live stack images (I suspect the latter). If that's the case then it looks like the alignment routine isn't coping with the shift of the image very well. Part of that could be that the area currently used for surface alignment is the middle of the frame, and that's a bit of a low contrast, low detail area in this case. If you re-align so that some sort of feature like a sunspot group is in the middle of the frame then that might well help. I'm currently working on a multi-point alignment and stacking option, which will help address this sort of problem.
Another thing that's worth checking is that the stacking rate (shown on the left hand side of the live stack area) matches the 60fps being delivered from your camera. It's possible that the CPU may not be able to keep up with stacking at 60fps and may be only processing some of the incoming frames.
One more thing to think about is the option of how long to use for calculating quality statistics (on the filtering tab). If this is set to a high value then you can end up with long periods with no frames added to the stack if the quality drops. In general this is probably best set to a value similar to the number calculated from stack length * 100 / percent to keep.
cheers,
Robin