Kalev Pank

Link to the 4 images - https://ufile.io/f/61vu3 Link to the stacked file - https://ufile.io/gnp71yp7

THe stacked result is 213MB and FITS images are 38MB, they are not getting through. How can I send you these large(?) files?

Attached the stacked result in this post, the 4 images will be in next

See attached Alignment tab screenshot.

Tried everyting, no luck. No streaks in any imaging. I have unselected the poorest image, I have unselected groups of images. I have tested with just two images, but if there is any change in star position between them both positions appear. So, no alignment occuring at all. I tried an earlier session a while ago and it worked correctly. The only point of difference is that I am using a different DSLR and lens this time,, but I don't see how that could affect this as other statcking apps do correct...

My stacking of 23 subframes has not aligned the stars, resulting in squiggly lines instead of a dot, - default alignment parameters. I dithered every two subframes, 30 sec exposures. I ran stacking in Siril and the result is aligned. See attached files. This is the first time I have seen this. I use ASTAP all the time. Version is 2026.09.19 Intel 64 bit.

Why is there a "grid" overlaid in the viewer when viewing a subframe, but not when viewing a stacked file. It changes when zooming. See attached.

Hi, When using flats I always get the message: "Warning flat pixel colour values differ too much. Use white light for OSC flats!!. Will compensate accordingly." This happens whether I use an LCD panel and white t-shirt, or EL panel or Skyflats. Why would this happen? Should I be concerned?