亞平寧山(下)畔

C.L.Chan

阿基米德(大平底坑)沐浴於亞平寧山(下)畔,  CraterArchimedes& Montes Apennines, UT 2020 11 25, 13h32m, Telescope TEC Maksutov-Cassegrain MC200/20,D=20cm, F.L.=400cm, Losmandy G-11 Equatorial Mount with motor drive. Camera QHY5III 224 Color Cam, Capture with FireCapture, Shoot at Gamma=100, Gain=31,Expo= 0.23ms/frame, avi format, stack and process 60% best frames in 1803frames by free Software AutoStakkert 3, wavelet with RegiStax V.6, Final touchby Microsoft Photo software. Atmospheric condition: Transparent: 8/10, Seeing :7/10. Equipment borrowed from Mr. Ng. The photo was taken at Kennedy Town 堅尼地城, Hong Kong.