Tonight is the only night since I’ve been in the Netherlands which could remotely qualify as “clear”. But, since it’s all relative I can tell you how “clear” it was. As I was letting my camera go for a few minute exposure, I noticed a plane flying close in projection to the moon. I was initially hoping to see the plane silhouetted against the moon, but as it flew closer I realized that wasn’t going to happy, but something possibly even a bit more neat was going to…
As the plane flew “past” the moon, it was still close enough that it’s shadow was projected onto the thin cirrus which was abundant in the sky. So, based on that I can say with some confidence that the altitude of the clouds is greater than 0m and less than about 9000m! 
But, to the real point.. I was able to get a few pictures of the Dwingeloo 25m radio telescope. Despite the moon and haze, there are a few star trails evident. Taking even a 5 minute exposure (with the aperture open) was too long! It might have been fun to stop the aperture down and take some 30 minute exposures, but with the cool air (-4C!) my battery wasn’t lasting.
And finally, a picture of the heath by night..
