Polaris

This is just a camera shot of Polaris. All us astronomers are very thankful for this star because our north pole is almost perfectly aligned to it and it allows us to align our scopes to the pole. because of being able to align to the pole we are able to track our scopes on the stars compensating for the rotation of the Earth. Polaris is the only star in the northern hemisphere that does not appear to move across the sky like all the others, in fact from earth it appears as the all the stars revolve around it. Early astronomers must have thought it was the center of the universe. Polaris is 430 light years from Earth and has two companion stars that appear to rotate around it every 24 hours, this is not the case because it is Earth that is rotating. Polaris is the one in the center on the image