三兄弟

C.L.Chan

三兄弟, 這裡是月面中央子午線西側, 在南緯10-20度的三個由大至小的隕坑. 234km直徑的嫦娥隕石坑就在中間的阿方索坑內的東北方.

3 brothers, 2021/08/16UT: 12h25m, 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=100, Gain=40, Expo= 0.323 ms/frame,frame rate=30 frames/sec, avi format, stack and process 70% best frames in 2696frames, with Software AutoStakkert 3, wavelet with RegiStax V.6, final tough byMicrosoft Photo, Atmospheric condition: Transparent: 8/10, Seeing: 7/10.Equipment borrowed from Mr. Ng. The photo was taken at Kennedy Town 堅尼地城, Hong Kong.