火星難得見大沖

C.L.Chan

火星難得見大沖  , 紅光耀眼掛夜空 . 沙塵忽然隨風起 , 兩極仍現在相中 .

Mars,apparent radius 12 sec, maximum in the year, Time taken 2018/07/22 HKT:00h55m, TelescopeTEC Maksutov-Cassegrain MC200/20, D=20cm, F.L.=400cm, Prime Focus, LosmandyG-11 Equatorial Mount with motor drive. Camera ASI 120MC CMOS Web Cam, framesize 480x320, Shoot at Gamma=49, Gain=80, Expo=3ms, 40 frames/sec, stack andprocess 107 in 3208 frames with Software RegiStax V.5, Lowest quality set at98%. got 98% Improvement. Atmospheric transparent : 8/10, Seeing : 8/10.Equipment borrowed from Mr.Ng. Taken at Kennedy Town 堅尼地城, Hong Kong.