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Hate how airplanes wreck your star-trail images?

Hate how airplanes wreck your star-trail images?

Me too, here is how to clean them up without the trouble of cloning or healing.
For those in my #astromentorship  group and those who already know how to stack star-trails, the below image should explain it all.

With the 4 images below, the top two are already stacked, the bottom two are the same frame that was used to stack the image above it.

As you notice, the stacked image on the left, has the trails from the airplanes, the image below it shows one of the frames containing the airplane trails.

In the lower right you see the single unstacked image where the airplane trail has been erased.  Using the paintbrush and black paint works the same.  Above that image is the stacked image where all of the plane trails were done in this manner.  If you notice, you can't see any trace of where the planes were.  This is due to using the blending method "lighten" when stacking.  This method of blending takes all the lightest information and uses it for the final image.  All of the darker information (like my eraser mark) are disregarded.

There you have it.  Clean, and easy star-trails



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