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主題: ultracat 108 作者: peter 於 2025-11-02 11:13:48 ultracat 108 f4.8 https://www.youtube.com/watch?v=6hAjs5iKs3Q cat91 是f4.9 https://www.youtube.com/watch?v=sJCgM9GMQUA 主題: 回覆： ultracat 108 作者: peter 於 2025-12-27 09:42:00 https://www.facebook.com/photo?fbid=10236245254325307&set=gm.3812650809041511&idorvanity=1753810334925579
https://telescopes.net/william-optics-ultracat-108-wifd-f-4-8-5-element-petzval-optical-tube-assembly.html (https://telescopes.net/media/wysiwyg/T-C-108-2.jpg) |