Hmm, there's no explicit function for keeping the camera's view perpendicular to the ground, so to speak. But you ought to be able to use the "look at" feature to accomplish your goal, at least in terms of alignment (there's no guarantee that this will fix your distortion issues though - I suspect you may simply be aiming for too large a feature, which will inevitably have distortion as the planet curves). In the 3D preview, the icon that is a little eye, second from right on the bottom toolbar, is the "look at point" function. What I would do is create a new Sphere object and place it in the same location as the Planet, which puts the sphere inside the planet, right at its center. Leave it enabled and visible in the 3D preview, then when you want to choose the Look At Point, you'll have a reference for where the center of the planet is and you can just click on it. That's about as accurate as I think you can get, unless I'm missing some other obvious method.
- Oshyan
