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主題: Bowling ball mount+ Infinite-axis telescope 作者: peter 於 2021-11-27 16:15:26 Bowling ball mount https://www.cloudynights.com/topic/430088-bowling-ball-mount/
(https://stellafane.org/convention/2006/images/scopes/Entry15-04.jpg) 主題: 回覆： Bowling ball mount 作者: peter 於 2021-11-27 16:16:12 https://sites.google.com/site/dougarion/telescopes
主題: 回覆： Bowling ball mount+ Infinite-axis telescope 作者: peter 於 2021-11-27 16:34:20 Infinite-axis telescope https://en.wikipedia.org/wiki/Infinite-axis_telescope
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