阿爾卑斯山脈

C.L.Chan

阿爾卑斯山脈中的大山谷, 柏拉圖平底環形坑及雨海中的肥人.

Crater Plato and Big Valley in Montes Alpes, 2019/09/09 HKT:20h27m, 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, frame size 1280 x 960 px, Shoot at Gamma=112,Gain=45, Expo= 0.1ms/frame, frame rate=50-107 frames/sec, avi format, stack andprocess 50% best frames in 3859 frames,­ with Software AstroStackert 3 ,wavelet with RegiStax V.6 ,   Atmospheric condition : Transparent : 8/10,Seeing : 7/10. Equipment borrowedfrom Mr. Ng. Photo taken at Kennedy Town堅尼地城, Hong Kong.