The photography logo reads incredibly well. I immediately understood "Camera and tripod" without thinking. I had no idea what drawing was until I read your post. It would look more like compass if you had put the pencil and needle detail on the legs. As for color theory, I felt it had something to do with beams of light but I didn't quite understand what until you said it. I wouldn't have put that round object at the top (presumably a light bulb) Just a beam of light entering and seven beams exiting. Sort of like Pink Floyd's Dark Side of the Moon cover only vertical. And the prism be a triangle.
You broke up the symmetry for the camera and it works well. Don't be afraid to do that. And adding more detail would help, like with the compass. The thick diagonal lines will generally read pretty well no matter what. So adding a little more complexity to the positive space shouldn't hurt.
"Astronomy offers an aesthetic indulgence not duplicated in any other field. This is not an academic or hypothetical attraction and should require no apologies, for the beauty to be found in the skies has been universally appreciated for unrecorded centuries."