Thursday, November 1, 2018

What is the precision required for Stepper Motor

ocuser is precise tool – it must allow to adjust imaging train position with high accuracy. But what is the exact accuracy? Well, it depends – mainly on focal ratio of instrument. There is a quality called Critical Focus Zone that, simply saying, describes the distance where the image is sharp. You can see in the table below how CFZ varies depending on telescope focal ratio:

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