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Steven you collimate with a star, it's free and the best way to go. I use Metaguide to assist with the process and once you have learnt the software it's really easy and best of all Metaguide is free.
Another option is to stack the focused star images or video and then sharpen a little bit to judge which way you have to move the secondary mirror. This method probably doesn't suit beginners in my opinion.
Best of luck
p.s
Planetary imaging can be really frustrating at first, but stick with it and eventually the results will come once you overcome the steep learning curve
͡° ͜ʖ ͡°
Troy
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