A few days ago I took a night sky image of the milky way with my XPERIA 1 II and wanted to take a closer look at the RAW file in Lightroom Mobile. When doing so, I realised a strange circular pattern. Though "auto" correction already revealed this pattern, I additionally increased the exposure to make it even more visible.
For me, it looks like something from the lens, but I am very new to photography and especially in post-processing RAW files, so I am wondering what it might be.
Is this something that can be corrected by whatever additional images?