刻卜勒環形山 2022 07 11

C.L.Chan

風暴洋中另外一個令人注目的, 是環坑及輻射紋都很光白的刻卜勒環形山, 因為成坑年齡較年青, 顏色還沒有老化變黑.

Crater Kepler, UT 2022 07 11,13h42m, Telescope TECMaksutov-Cassegrain MC200/20, D=20cm, Effective Focal Length= 4 meter, LosmandyG-11 Equatorial Mount with motor drive. Camera QHY 5III 224 Color Cam, Capturewith FireCapture, Shoot at Gamma=100, Gain=14, Expo= 3.5 ms/frame, 29 f/s, aviformat, stack and process 10% best frames in 1799 frames by free SoftwareAutoStakkert 3, wavelet with RegiStax V.6, iL=2, L1=19. Final touch byMicrosoft Photo software. 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.