月球東北1/4部份
月球東北1/4部份 , 相片中最大的圓形盤地是澄海 , 即神話中吳剛的頭 . North-Eastpart of the Moon, 2019/08/07, HKT: 19h20m, Telescope: Astro Physics, Star 12 ED, D=12cm, F.L.=102cm, PrimeFocus, Losmandy G-11 Equatorial Mount with motor drive. Camera QHY 5III 224 Color Cam, frame size 1280x960 px, Shoot atGamma=77, Gain=28, Expo 0.5ms, 56-105 frames/sec for 1 min, avi format, stackand process 30% best frames in 3375 frames, with Software AutoStakkert 3 ,wavelet with RegiStax V.6 , Atmospheric condition : Transparent : 7/10, Seeing:7/10. Equipment borrowed from Mr. Ng. Photo taken atKennedy Town堅尼地城, Hong Kong
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