汽海東南的兩條月溪
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.
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