汽海東南的兩條月溪

C.L.Chan

汽海東南的兩條月溪, RimaHyginus (left) & Ariadaeus(right), UT:2020/11/22, 10h17m, Telescope TEC Maksutov-Cassegrain MC200/20, D=20cm,F.L.=400cm, Losmandy G-11 Equatorial Mount with motor drive. Camera QHY 5III224 Color Cam,  Shoot by FireCapture atGamma=100, Gain=41, Expo= 0.4ms/frame, frame rate=20 frames/sec, RGB & aviformat, stack and process 40% best frames in 1803 frames,­ with SoftwareAstroStackert 3 with DSR, wavelet with RegiStax V.6,  final touch by GIMP & Microsoft photo.Atmospheric condition: Transparent: 9­/10, Seeing: 9/10, Equipment borrowedfrom Mr. Ng. The photo was taken at Kennedy Town堅尼地城, Hong Kong.