Jupiter and Io

C.L.Chan

應該是地球變熱 , 令到晚間雲量增加, 隔一個半月才能再拍木星及其衛星. 今夜風大視寧度不太好.

Jupiter and it’s satillites Io,   2019/07/23 HKT: 21h48m, Telescope TECMaksutov-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 1200x980 px, Shoot at Gamma=100,Gain=44, Expo 1.0ms, 116 frames/sec, avi format, stack and process 50% bestframes in 2714 frames,­ with Software AstroStackert 3 , wavelet with RegiStaxV.6 ,   Atmospheric condition : Transparent : 9­/10,Seeing : 7/10. Equipment borrowedfrom Mr. Ng. Photo taken at Kennedy Town堅尼地城, Hong Kong.