木星與艾奧

C.L.Chan

木星與艾奧. 北在上 .
Jupiter, with Io, apparent radius 22.4 sec, 2018/05/12 HKT:23h23m,
Telescope TEC Maksutov-Cassegrain MC200/20, D=20cm, F.L.=400cm, Prime Focus, Losmandy G-11 Equatorial Mount with motor drive. Camera ASI 120MC CMOS Web Cam, frame size 512x400, Shot at Gamma=63, Gain=100, Expo=5ms, 40 frames/sec, stack and process 1896 frames with Software RegiStax V.5, Lowest quality = 95%. get 97% Improvement. Atmospheric transparent : 8/10, Seeing : 8/10. Equipment borrowed from Mr.Ng. Taken at Kennedy Town 堅尼地城, Hong Kong.