That image of Stadius is precisely the area I was observing on Saturday evening 24th February 2018.
I am curious to know as to what is the curious jagged feature at 11 o'clock in Rik's image.
Does it have a name? Is it a Catena of craters?
I'm not sure to what you are referring, but if you mean that long string of craterlets that extends from just outside of Stadius to the edge of the frame (and beyond), then I think those are secondary impact craters from Copernicus. With proper lighting those can be seen in fairly small scopes, I'd guess even in an 80mm refractor. I've photographed them using both an 80mm APO and my Celestron C90 Mak and I know that I've gotten a fairly good full-disk image of the moon when those features become detectable (easy with higher magnifications and slightly larger scopes, but challenging when producing an image of the entire disk of the moon -- you need good seeing and a camera with a lot of small pixels, like Sony's IMX178/IMX183 or if you have a small format camera you need to produce a very large matrix to cover the full moon at adequate detail).
The following link to a moon map on the USGS website identifies many of those craterlets, but they are named after Stadius: Stadius P, Stadius R, Stadius E, Stadius S, etc.
Edited by james7ca, 12 March 2018 - 06:41 AM.