里伊塔月谷

C.L.Chan

里伊塔月谷(Vallis Rheita) L=445 km, W = 30 km, 在圖中上部份, UT: 2020/11/19, 10h24m, Telescope TEC Maksutov-Cassegrain MC200/20, D=20cm, F.L.=400cm, LosmandyG-11 Equatorial Mount with motor drive. Camera QHY 5III 224 Color Cam,  Shoot by FireCapture at Gamma=100, Gain=45,Expo= 0.4ms/frame, frame rate=20 frames/sec, RGB & avi format, stack andprocess 30% best frames in 1803 frames,­ with Software AstroStackert 3 withDSR, wavelet with RegiStax V.6,  finaltouch by GIMP & Microsoft photo. Atmospheric condition: Transparent: 8­/10,Seeing: 8/10, Equipment borrowed from Mr. Ng. The photo was taken at KennedyTown堅尼地城, Hong Kong.