This is a small selection of StarTools tutorials and resources, created by StarTools users.
No nonsense, affordable astro software that just works.
Once all issues are fixed, launch AutoDev again and tell it to 'redo' the stretch.
Chances are that the image looks terrible, which is - believe it or not - the point.
AutoDev finds the best compromise global curve, given what detail is visible in your image and your preferences.
You can convert everything you see to a format you find convenient. Give it a try!