十曲月溪

C.L.Chan

右上的是高加索山脈 , 下面是阿平寧山脈, 它們之間是雨海(左上) 到澄海(右下) 的通道, 最大的一個隕坑是浴缸水瀉的阿基米德. 阿平寧山脈中有一十曲月溪, 你可找到?
10 turns Rima in Montes Apenninus,2019/10/09 HKT: 21h07m, 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 1336 x 992 px, Shoot at Gamma=112, Gain=40, Expo= 0.15ms/frame, frame rate=27-108 frames/sec, avi format, stack and process 50% best frames in 4125 frames,¬ with Software AstroStackert 3 , wavelet with RegiStax V.6 , Atmospheric condition : Transparent : 8/10, Seeing : 7/10. Equipment borrowed from Mr. Ng. Photo taken at Kennedy Town堅尼地城, Hong Kong.