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三胞胎 , 四胞胎. 如果由大到細是三兄弟, 他們的南邊就有三胞胎和四胞胎. Triplets & Quadruplets, 2019/11/05 HKT: 19h21m, Telescope TEC Maksutov-CassegrainMC200/20, D=20cm, F.L.= 400cm, Losmandy G-11 Equatorial Mount with motor drive.Camera QHY 5III 224 Color Cam, frame size 1280 x 960 px, Shoot at Gain=40,Expo= 0.6ms/frame, Gamma=112, frame rate=25-117 frames/sec, avi format, stackand process 32% best in 1481 frames, with Software AutoStakkert 3 , waveletwith RegiStax V.6 , Atmospheric condition : Transparent : 8/10, Seeing : 6/10.Equipment borrowed from Mr. Ng. Photo taken at Kennedy Town 堅尼地城, Hong Kong.
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發表於 2019-11-5 22:08:49