>>4169515If you're going for star trails just do one long exposure to avoid the dashed lines, or be quicker between shots. Looks like your mount settled during shooting too (the vertical blur at the top of the stacks) and you may have bumped the camera at the beginning/end shot. Toss that one.
Are you just using something plastic like this? If so, let it settle for minute after every adjustment. They sag no matter how tightly you clamp them.
