These days have been full of news of the Planck Telescope. The most popular is the actualization of the CMB picture (the ellipse with dots red and blue). I know the idea of it. Each dot represents the "temperature" in some direction (from the earth) in some sort of (θ;ψ) chart -0≤(θ;ψ)≤2[itex]\pi[/itex] . But how do I have to look at that chart? Is it some sort of "planisphere" where the north pole is just one point and the south pole is just another point. If that's it, if I go to the top right I appear in the top left -as in a planisphere", or not? Just a silly yes or no question, but I couldnt find it in any place.