阿平寧山脈

C.L.Chan

照片左邊是雨海, 下邊斜走的是阿平寧山脈,初升太陽把它的山脊線投影到雨海平原上, 利用當地太陽的地平高度及山影的長度可算出山的高度.照片中最大的環形山是洗澡時發現了方法去量度物件體積的阿基米德 , 你看溢出的浴缸水湧流到地面上了.另一個環形坑叫 Autolycus.

Montes Apenninus and Crater Archimedes, 2019/09/07 HKT: 21h05m,Telescope TEC Maksutov-Cassegrain MC200/20, D=20cm,F.L.=400cm, Losmandy G-11 Equatorial Mount with motor drive. Camera QHY 5III 224 Color Cam, frame size 1280 x 960 px, Shoot at Gamma=107,Gain=50, Expo= 0.18ms/frame, frame rate=50-107 frames/sec, avi format, stackand process 30% best frames in 4284 frames,­ with Software AstroStackert 3 ,wavelet with RegiStax V.6 ,   Atmospheric condition : Transparent : 7/10,Seeing : 7/10. Equipment borrowedfrom Mr. Ng. Photo taken at Kennedy Town堅尼地城, Hong Kong