最大的隕坑叫亞基米德
本帖最後由 C.L.Chan 於 2022-3-12 10:26 編輯圖中最大的隕坑叫亞基米德, 取這個名字的原因是它有大量水湧出 (離色是比地面的淺),令人想起亞基米德洗澡時, 想出了量度不定形物體體績的最佳方法. 下面是阿平寧山脈.CreatorArchimedes & Montes Apennines, UT 2022 03 11, 13h52m, Telescope TEC Maksutov-CassegrainMC200/20, D=20cm, Effective Focal Length= 4 meter, LosmandyG-11 Equatorial Mount with motor drive. Camera QHY 5III 224 Color Cam, Capturewith FireCapture, Shoot at Gamma=100, Gain=22, Expo= 4.9 ms/frame, 29 f/s, Avi format, stack and process 30% best frames in 902 frames by free SoftwareAutoStakkert 3, wavelet with RegiStax V.6, iL=2, L1=22, Final touch by Microsoft Photo software. Atmospheric condition: Transparent: 8/10, Seeing:7/10. Equipment borrowed from Mr. Ng. The photo was taken at Kennedy Town 堅尼地城, Hong Kong.
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