Oh 2d eh? No, not euler, but I am sure there is an alternative. https://developer.roblox.com/ has all functions and such in a database and is great for getting detailed explanations without the wait time here on the devforum.
If it is, to me that looks like the image itself isn’t centered. Even if you AnchorPoint is 0.5, 0.5 if the image center isn’t at the center of the image in whatever editor it was made in, then it won’t rotate around the exact center.