nice interface looks Tuur. my first impression is the first pano seems like it has ALOT of noise in it. Did you use high ISO when shooting at night? Do you use photoshop? I have an excellent de noise filter that works wonders in high ISO shots. wait i remember you use a crapintosh LOL :) you should try to denoise the night time images some. also the hotpost are kind of hard to see. try the blendmode of "hardlight" it multiplys white by white and black by black. basically it makes the whites whiter and the blacks blacker. try something other than normal to get it to stand out some. i look at this tour more when i am at home, still at work now.

gonna have to leave the lens open a long time at iso 100. google for a denoise filter you will be surprised on how well it can clean an image up sometimes.