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七絕<<阿基米德>> 阿平寧山有澡堂，阿基米德浴缸躺。
水溢想著量體積，發明方法向人講。 Monts Apenninus and Crater Archimedes, UT 202104 21, 14h18m, 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=37 Expo= 0.41 ms/frame, aviformat, stack and process 30% best frames in 1804 frames by free SoftwareAutoStakkert 3, wavelet with RegiStax V.6, Final touch by Microsoft Photosoftware. Atmospheric condition: Transparent: 9/10, 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 2021-4-23 10:11:08