木星的大紅班及衛星艾奧, UT 2020/07/12

C.L.Chan

木星的大紅班及衛星艾奧, Jupiter, GRS & Io, UT 2020/07/12: 15h57m, Telescope TEC Maksutov-Cassegrain MC200/20, D=20cm, F.L.=400cm, with 2x Powermate, E.F.L.= 8 meters, Losmandy G-11 Equatorial Mount with motor drive. Camera QHY 5III 224 Color Cam, frame size 728x552 px, Shoot by FireCapture at Gamma=100, Gain=40, Expo= 2ms/frame, frame rate=50 frames/sec, RGB & avi format, stack and process 80% best frames in 6123 frames,­ with Software AstroStackert 3, wavelet with RegiStax V.6, final touch by Microsoft photo.  Atmospheric condition: Transparent: 7­/10, Seeing: 7/10, between moving clouds. Equipment borrowed from Mr. Ng. The photo was taken at Kennedy Town堅尼地城, Hong Kong.