>>4445766
> I can't strike a good balance for the exposure time. Too long makes the stars streak from moving, not long enough doesn't make them show, and high iso looks like dog anus.
Welcome to astro, where everything is fighting against you. You can get a tracking mount for your tripod which would let you take longer exposures, or you'll need to buy a camera with a bigger sensor. There's some major nerdage that can go into how to do astro photos properly, but the reality is you've probably reached the extent of what the phone can do for you.