酒海 & Crater Rosse
酒海的辨認方法是它上面只有一個帶尾的小形隕坑---Rosse, 羅斯爵士, 他用當時世界最大的1.8 m(70吋) 直徑的銅材料製造的反射鏡, 測繪星雲, 首作 M51旋渦星雲圖. Mare Nectaris &Crater Rosse, 2019/10/16 HKT: 22h23m, 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 Gamma=112, Gain=4, Expo= 0.1ms/frame, framerate=50-107 frames/sec, avi format, stack and process 25% best frames in 1389frames, with Software AutoStakkert 3 , wavelet with RegiStax V.6, final toughby Microsoft Photo, Atmospheric condition : Transparent : 8/10, Seeing : 7/10.Equipment borrowed from Mr. Ng. Photo taken at Kennedy Town堅尼地城, Hong Kong.
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