今夜古劍在手, 何日鎮懾雲雨?
今夜古劍在手, 何日鎮懾雲雨?阿爾卑斯大狹谷像把考古出土的古銅劍. 有賴兩個免費軟件, 疊出此照. Alpes Valley, UT 2022 07 08, 13h57m, TelescopeTEC Maksutov-Cassegrain MC200/20, D=20cm, Tele Vue 2,5x Barlow lens, EffectiveFocal Length=10 meter, Losmandy G-11 Equatorial Mount with motor drive. CameraQHY 5III 224 Color Cam, Capture with FireCapture, Shoot at Gamma=100, Gain=30,Expo= 4.9 ms/frame, 5 f/s, avi format, stack and process 25% best frames in 326frames by free Software AutoStakkert 3, wavelet with RegiStax V.6, iL=2, L1=10,sharpen 0.2. Final touch by Microsoft Photo software. Atmospheric condition:Transparent: 9/10, Seeing: 7/10. Equipment borrowed from Mr. Ng. The photo wastaken at Kennedy Town 堅尼地城, Hong Kong.
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