The game guides you through this achievement, but sometimes worrying about time can cause confusion, and to avoid playing this all the way again because of that, I have made a quick and fast video guide showing you how to do it, and where to move the telescope.
Take note that you might not get the achievement on your first run through anyways, as this achievement is glitchy. I completed the entire episode, and this was the only achievement left. So I shut down my Adera app, opened it again a few minutes later, went to episode 4, started a new game, and quickly got to this part. And then on my first attempt after doing that, I got this achievement, as is displayed in the video.x jjaldana 2 x
had trouble using a video guide, so for those of you that do not like videos, he provided a really nice image as well.