oOChrisOo

This was a big help. I downloaded AstronomyTools and it helped massively. I can still see a small amount of banding but the overall image is much better. thanks a lot, greatly appreciated.

Hello everyone. I’m very new to astronomy, and even more of a novice when it comes to astrophotography. So, I’ve been taking images of deep space for a couple of months now. I’m using a very basic DSLR, just one I had in the house. (Canon 4000d) and an William optics Z61 telescope. I recently bought an optolong l-extreme dual band filter. Since using this filter I seem to be getting strange horizontal lines through my images. I’m not sure if this is anything to do with the filter, as I haven’t removed the filter from the telescope since I attached it. But the frames are stacked in DSS, and I’m trying my hand at Adobe photoshop for post processing. And the slightest curve stretch and these strange lines appear! any info on what they are and how I could fix them would be a massive help. I’ve attached an image of the North America nebula with a quick process to show you the problem.