Photographing star trails can be fun and there is no one way to produce an image. In the top photo, I combined about 15 images to get this streaking effect.
In this second photo, I completed about a 45 minute exposure to get streaks that were a bit longer, but not so many. I did a layer mask to achieve the multi-colored look.
Dawn2Dawn Photography 
These are a delight! Love the work you did to produce these effects.
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Thank you very much!
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Kinda dizzying…LOL!
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Good job 👏👏
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