There are many great tools that can be used to collimate your telescope.
A good tool that helped me understand the basics was the Orion Telescope Collimating Eyepiece...no laser or batteries needed. Solid and consistent it is easy to use and helped me build me understanding of the process. My first scope was an 8 inch and the Orion too, worked a treat.
As I got bigger (and better) scopes I got bigger and better tools...including the Glatter Laser and Tu-blug and eventually a Catseye System.
I still use one or all depending on my purpose. All work and all give good results. Collimating a reflecting telescope sounds at first glance like it is complicated but once you understand what you are doing and how to do it, it is a snap.
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