增長曝光時間
木星, 按 Michael Wong 的建議, 增長曝光時間, 降低增益,以達高訊噪比, 及更有效利用整段曝光時間. 昨晚須然風大薄雲, 仍有此影像. Jupiter and its satellites,2021/08/21 UT: 14h19m,Telescope TEC Maksutov-Cassegrain MC200/20, D=20cm, F.L.= 400cm, Losmandy G-11Equatorial Mount with motor drive. Camera QHY 5III 224 Color Cam, frame size 1174x 386 px, Shoot at Gamma=80, Gain=24, Expo= 8 ms/frame, frame rate=30frames/sec, avi format, stack, and process 62% best frames in 6059 frames, withSoftware AutoStakkert 3, wavelet with RegiStax V.6, final tough by MicrosoftPhoto, 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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