http://tiananmenstremendousachievements ... telescope/Chanlunlun 寫:Three reasons :-bingsze 寫:正啊!謝謝分享!
還有,大家知不知國家總是在建大的射電,其他的光學總不是這麼大呢?
1. lack the technology to grind, polish and figure 10m class mirror.
2. lack the suitable site to place 10 m class telescope. Even around the whole world such site is still rare.
3. break throughs in optical astronomy may comes not as fast as those from radio astronomy. Better c/p ratio in radio astronomy.
military usage.