Here’s the image as reprinted by The Telegraph:
According to the article, the bright lights in the government quarter and along West Berlin’s premier shopping boulevard the Kurfürstendamm contrast with the “softer, yellow glow in the east”. This rather implies that the intrepid journalist believes that the yellow lights are dimmer than the whiter ones, and (although this is a bit ambiguous) that all the bright white lights are either in the west, or in the government quarter.
First, the “softer, yellow glow”. It was a commenter on The Telegraph going by the name of “george” who had the simple idea of desaturating the image — taking the colour out of it. “Find the line of wall now!” he said:
Not so easy. So now, where was the wall exactly? The article suggests all you need do is draw a line where yellow meets white, but in fact there’s a whole mass of white that is actually in former East Berlin; basically, the district of Mitte, central Berlin, where most of the tourists go. I’ve done my best to draw in where the wall went: it may not be completely accurate, but it’s good enough.
The government quarter straddles the border just north of the Brandenburg Gate and is actually relatively poorly lit, save for a particularly bright spot which I first thought must be the Reichstag, but on reflection is more likely to be the helipad on the Chancellory. Stretching eastwards from the Brandenburg Gate is East Berlin’s main street, Unter den Linden, and you can clearly see where it intersects with Friedrichstrasse. The focal point of East Berlin is Alexanderplatz, which is ablaze. Potsdamer Platz is a new development on former No Man’s Land, while the Culture Forum, just to the west, is where the Philharmonic, the Chamber Music Hall, the State Library, the Crafts Museum and the National Gallery are located.
So there it is: contrary to what one newspaper would have you believe, East Berlin is looking very bright these days.