Noctilucent clouds over the Orlice river

English Czech
Výskyt - pond in middle of forrest
Object: Noctilucent clouds - NLC
Location, date: Hradec Králové (Czech Republic)
Focal lenght, speed: 40 mm, f/8
Camera: Canon EOS 350D on tripod
Senzor: APS-C 22.2 x 14.8 mm, pixel 6.4 um
Lens: Sigma 17-70 mm f/2.8-4.5 DC Macro
Expozure: 15 sec, ISO 100
Filter: none