Dear ATMs,
After 24 hours of rough grinding this is so far we have arrived :-
1. Focal length :- 177 inches
2. f/ratio :- f/5.9
3. Total volume of glass removed :- 112 cubic inches
4. Edge thickness :- 24.3 mm
It means that we have gone through half of the total way. We are looking forward to finish rough within the Easter holiday so that the whole polishing could be accomplished before the school』s open day.
Best regards
Chan Yuk Lun
29-3-2005
The making of 30 in telescope - 6, 24 hrs of roughing
-
Chanlunlun
- 夸克星
- 文章: 3847
- 註冊時間: 週四 09 10月, 2003 21:06
The making of 30 in telescope - 6, 24 hrs of roughing
- 附加檔案
-
- The 30 inch tool, together with the table, seem like to be in a mess after 24 hours of rough grinding. Notice that the tool has diameter exactly the width of the table.
- 30_8.jpg (93.06 KiB) 已瀏覽 8990 次
最後由 Chanlunlun 於 週三 30 3月, 2005 19:00 編輯，總共編輯了 1 次。
誰在線上
正在瀏覽這個版面的使用者：沒有註冊會員 和 20 位訪客