Ow yeah!!! Very nice pics
. You caught a very strong NLC display.
I don't know if I've said this before but I'm in Rotterdam since 5 months as an exchange student (Erasmus). And the latitude is very favorable to catch NLC displays.
The very first I'v took, in the early morning of the 3rd of June :
The second time, early morning too :
The third time, morning of the 13th June:
But the fourth time was the best for now. In the late evening of the 16th this time
A very strong display, and I was amazed by the surface they took in the sky, very close to zenith
And a bit of lightpainting
And more here
Hope you will enjoy it