日落危海

C.L.Chan

日落危海, 圓形的危海在月面的最東邊, 斜照的陽光特顯了玄武岩的” 波濤”, 明亮的山區在危海西側. Wesr Rim of the Sea ofDanger, UT 2020/10/04: 17h39m, Telescope TEC Maksutov-Cassegrain MC200/20, D=20cm, F.L.=400cm, LosmandyG-11 Equatorial Mount with motor drive. Camera QHY 5III 224 Color Cam,  Shoot by FireCapture at Gamma=100, Gain=39,Expo= 0.46ms/frame, frame rate=8 frames/sec, RGB & avi format, stack andprocess 50% best frames in 1799 frames,­ with Software AstroStackert 3 withDSR, wavelet with RegiStax V.6,  finaltouch by Microsoft photo. Atmospheric condition: Transparent: 7­/10, Seeing:7/10, Equipment borrowed from Mr. Ng. The photo was taken at Kennedy Town堅尼地城, Hong Kong.