Thanks for the info. That makes a lot of sense. My next question was going to be, how to I stop the focuser from going so far off focus that it can't get back - but you've answered that for me! I've gone back ad forth on subframing - I had issues with "no stars detected" when I moved to my second target, so I decided to stop using that until I sort out the other issues. When it worked, it seemed like I was getting a better V shape. Btw, I love the Moonlite NiteCrawler; beautifully engineered piece of kit.

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