像是給洪水沖擦過的

C.L.Chan

像是給洪水沖擦過的危海(上)南岸, 下邊是豐富海 MareFecunditatis.

UT 2021 02 16, 11h59m,Telescope TEC Maksutov-Cassegrain MC200/20, D=20cm, F.L.=400cm, Losmandy G-11Equatorial Mount with motor drive. Camera QHY 5III 224 Color Cam, Capture withFireCapture, Shoot at Gamma=100, Gain=40, Expo= 0.493 ms/frame, avi format,stack and process 37% best frames in 1803 frames by free Software AutoStakkert3, wavelet with RegiStax V.6, Final touch by Microsoft Photo software.Atmospheric condition: Transparent: 7/10, Seeing : 8/10. Equipment borrowedfrom Mr. Ng. The photo was taken at Kennedy Town 堅尼地城,Hong Kong.