自己磨卡式望远镜 副镜的曲率是怎么检测的？

[contax]

？？？？？？？？？？？？？？？？？？？？？

[Chanlunlun]

Use a spherometer, precisely made.

[coolguy666]

即是怎樣? 可以詳細一點說明嗎?
我都好想知....
謝謝教道

[Chanlunlun]

即是怎樣? 可以詳細一點說明嗎?
我都好想知....
謝謝教道

Dear Coolguy666,

If you don't know the technique of constructing and operating of a precise spherometer, I advice you stick back to a Newtonian instead.

Cassegrain has all kinds of disadvantages one can imagine of. If you still stick to it you will probably regret.

Best regards
Chan Yuk Lun

[coolguy666]

thank you very much ^^

[苏鲁锭]

确实没有别的好办法。就先磨一个凹的样板吧。
凹的球面样板----凹的球面镜子总是好检测的。
但是卡镜的凸副镜是双曲面的，这一点你要注意。
用凹的球面样板检测这个凸的双曲面时条纹不是直的。