阿爾泰斷崖

C.L.Chan

農曆十五之後便看到背光的阿爾泰斷崖(L=427km, H=1Km), 由左邊彎彎向右下走. Rupes Alta, UT 2020 008 08, 16h30m, Telescope TECMaksutov-Cassegrain MC200/20, D=20cm, F.L.=400cm, Losmandy G-11 EquatorialMount with motor drive. Camera QHY 5III 224 Color Cam, Capture withFireCapture, Shoot at Gamma=100, Gain=40, Expo= 0.25ms/frame, avi format, stackand process 20% best frames in 1784 frames by free Software AutoStakkert 3,wavelet with RegiStax V.6, Final touch by Microsoft Photo software. Atmosphericcondition: Transparent: 8/10, Seeing : 7/10. Equipment borrowed from Mr. Ng.The photo was taken at Kennedy Town 堅尼地城, Hong Kong.