北地的四葉草 Crater Meton
北地的四葉草 Crater Meton, UT: 2020/11/22, 10h10m, Telescope TECMaksutov-Cassegrain MC200/20, D=20cm, F.L.=400cm, Losmandy G-11 EquatorialMount with motor drive. Camera QHY 5III 224 Color Cam,Shoot by FireCapture at Gamma=100, Gain=41,Expo= 0.4ms/frame, frame rate=20 frames/sec, RGB & avi format, stack andprocess 25% best frames in 1804 frames, with Software AstroStackert 3 withDSR, wavelet with RegiStax V.6,finaltouch by GIMP & Microsoft photo. Atmospheric condition: Transparent: 9/10,Seeing: 9/10, Equipment borrowed from Mr. Ng. The photo was taken at KennedyTown堅尼地城, Hong Kong.
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