畢氏隕坑Pythagoras
畢氏隕坑Pythagoras就是這個具明亮的中央小山的隕坑, 前景的坑中坑是 Crater Babbage.2019/10/11 HKT: 21h29m,Telescope TEC Maksutov-CassegrainMC200/20, D=20cm, F.L.= 400cm, Tele Vue 2x Powermate, total focal length is 800cm, Losmandy G-11 Equatorial Mount with motor drive. Camera QHY 5III 224 Color Cam, frame size 1280 x 960 px, Shoot at Gain=42,Expo= 0.6ms/frame, Gamma=112, frame rate=30-107 frames/sec, avi format, stackand process 36% best frames in 1585 frames, with Software AutoStakkert 3 ,wavelet with RegiStax V.6 , final tough by Microsoft Photo,Atmospheric condition : Transparent : 7/10,Seeing : 7/10. Equipment borrowedfrom Mr. Ng. Photo taken at Kennedy Town堅尼地城, Hong Kong.
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