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危海 Mare Crisium 北岸及克萊奧曼季斯 Crater Cleomedes D=130 km. UT 2021 0216, 11h56m, 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,Capture with FireCapture, Shoot at Gamma=100, Gain=40, Expo= 0.763 ms/frame,avi format, stack and process 37% best frames in 1803 frames by free SoftwareAutoStakkert 3, wavelet with RegiStax V.6, Final touch by Microsoft Photosoftware. Atmospheric condition: Transparent: 7/10, Seeing : 8/10. Equipmentborrowed from Mr. Ng. The photo was taken at Kennedy Town 堅尼地城, Hong Kong.
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發表於 2021-2-17 08:58:27