虹灣
虹灣, 上邊古老的山區是雨海環形壁的西北部份, 所以保留較早期撞擊的大隕坑. 紅灣的玄武岩漿平原, 相對就較年輕了, 沒有較大的隕石撞擊, 只有個別小坑. 虹灣因其酷似彩虹, 因而得名.Sinus Iridum, 2019/09/10 HKT: 21h23m,Telescope TEC Maksutov-CassegrainMC200/20, D=20cm, F.L.= 400cm, Losmandy G-11 Equatorial Mount with motor drive.Camera QHY 5III 224 Color Cam, frame size 1352 x 1000px, Shoot at Gain=45,Expo= 0.1ms/frame, Gamma=112, frame rate=35-120 frames/sec, avi format, stackand process 45% best frames in 3606 frames, with Software AstroStackert 3 ,wavelet with RegiStax V.6 , Atmospheric condition : Transparent : 8/10,Seeing : 7/10. Equipment borrowedfrom Mr. Ng. Photo taken at Kennedy Town堅尼地城, Hong Kong.
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