This post is also available in: English (英語)
気流がとても良い、当地では年間でも最高。S=7-8/10,39cm(45cmを絞って使用）でも700倍で火星面の暗色模様がほんのり見えだした。後半の画像では火星面に2重リッジがのゴーストが発生。光軸不良ですかね？
Mars 2020-08-04(UT)
Seeing condition is very good, and it is the best in the year. Even at S=7-8/10, 39cm (45cm was used after squeezing), the dark color feature on Mars surface was barely visible at 700 powers. In the latter half of the image, a double ridge ghost appears on the surface of Mars. Is the optical axis defective?
