月溝
上弦月光暗交替地域的裂溝 , 陽光在當地斜射 , 更好顯示了裂溝的形貌 , 成因之一是當地的玄武岩漿流出平原之後凝固及收縮而造成的 . Rimaon the Moon at first quarter, 2019/09/06 HKT: 21h25m, Telescope TEC Maksutov-Cassegrain MC200/20, D=20cm,F.L.=400cm, Losmandy G-11 Equatorial Mount with motor drive. Camera QHY 5III 224 Color Cam, Expo 1ms/frame, exposure 30 sec, serformat, stack and process 50% best frames with Software AutoStakkert 3 ,wavelet with RegiStax V.6 , Atmospheric condition : Transparent : 9/10,Seeing : 7/10. Equipmentborrowed from Mr. Ng. Photo taken at Kennedy Town堅尼地城, Hong Kong.
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