木星 , 大紅斑 , 木衛及其影

C.L.Chan

木星及其大紅斑 , 木衛 I (Io) 在它的右邊 , 木衛 II (Europa) 的影子投在木星上
Jupiter and satellites, 2015/05/14 HKT: 20h14m,
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, Shoot at 20 frames/sec, stack and process 1552 frames with Software RegiStax V.5 . Atmospheric transparent :9/10, Seeing :7 /10. Equipment borrowed from H.C.Ng. Taken at Kennedy Town, Hong Kong.