Crater Drygalski is number 94 in the Lunar 100, so a very difficult object (the list is from easy to difficult). But when libration is cooperating, it isn't difficult to see at all. The crater, at the moon edge, was easy to sketch. Love the central mountains: only visible as two small lines. But I had a hard time sketching the hills and brightly lit craters at the foreground.
Edited by Jef De Wit, 09 April 2020 - 10:46 AM.