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Hans, everything depends on what you intend to do with the OTA. If you are viewing, then hi precision collimation is less critical. If you are imaging then you will need the ability to collimate to a high level.
The basic tools you will need are a sight tube, a cheshire and laser. Those will get you good collimation. For higher precision work you'll need a good laser and a full cats eye collimation kit. All good tools and ones you will keep forever.
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