Noctilucent clouds 4 July 2014

Noctilucent clouds are clouds that can be seen in summer from July to August, shortly after the sunset or before sunrise. They are located much higher than normal clouds, at a height of approximately 80 km, therefore seen when the Sun illuminates their the bottom side.

Object: Noctilucent clouds
Date: 4 July 2014 01:25 UT
Equipment: Nikon D3000, Nikkor 18-55mm@55mm, f/5.6, ISO 800, 30s
Object: Noctilucent clouds
Date: 4 July 2014 01:36 UT
Equipment: Nikon D3000, Nikkor 35mm, f/1.8, ISO 200, 10s

Object: Noctilucent clouds
Date: 4 July 2014 01:45 UT
Equipment: Nikon D3000, Nikkor 35mm, f/2.5, ISO 200, 15s