里伊塔月谷 2-10 11 -4

C.L.Chan

里伊塔月谷, 在照片右下象限中上下走 , 長455 km, 寬 10-30 km. 為月面第二長谷.

Vallis Rheita (at lower right), 2019/11/04 HKT: 19h32m, Telescope TECMaksutov-Cassegrain MC200/20, D=20cm, F.L.= 400cm, Losmandy G-11 EquatorialMount with motor drive. Camera QHY 5III 224 Color Cam, frame size 1280 x 960px, Shoot at Gain=40, Expo= 0.4ms/frame, Gamma=112, frame rate=33-106frames/sec, avi format, stack and process 50% best frames in 12200 frames, withSoftware AutoStakkert 3 , wavelet with RegiStax V.6 , Atmospheric condition :Transparent : 8/10, Seeing : 7/10. Equipment borrowed from Mr. Ng. Photo takenat Kennedy Town 堅尼地城, Hong Kong.