And so:
In the first photo there is an amateur shot of this lunar mountain, as well as the place where the Chinese mission Chang'e 5 will sit.
As you can see from the survey parameters, the peak is clearly seen at a telescope aperture of 9.25 inches. The main thing is to capture a stable and transparent atmosphere in order to obtain such shots.
In the second photo, Rumker is already captured from the orbital station. And on the third, an amateur sketch of a volcano, when observed with a 200mm telescope with a magnification of 320x. It is worth noting that the author who made this sketch received a very successful moon phase (diagram in the upper left corner of the sketch), which allowed him to see quite a lot of details in the structure of the mountain range. This effect can be achieved when oblique sunlight falls on the observed object. Because in this case, the shadows cast by it are greatly lengthened and make the picture more detailed.
On the fourth and fifth maps, which will help find the landing site of the Chinese lunar apparatus.
Rumker Peak was formed from a shield volcano in the Eratosthenic period. The peak is located in the southern part of the lava plateau with a diameter of over 70 km. The plateau lies isolated in the Ocean of Storms and rises up to 1100 m relative to the "sea" plain.
And of course, the 2016 Chinese Moon Atlas. I hope you find it useful!
You can download the atlas here.
And in the link to the source there is a very good article about the volcano (eng).
Clear sky and successful observations to everyone!