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螺旋式微调调焦器 VS 传统调焦器 https://youtu.be/LgTmL3pGtmY对于普通的导星和深 […]

Autoguiding is one of the most challenging tasks to master in astrophotography; nowadays, with digital cameras (CCD or CMOS), manual guiding makes no sense, as it is almost impossible to keep the required accuracy, even more with the ever-increasing exposure times everyone is using.