Rafał S' photostream

I just wanted to say hello to everybody - I'm still alive ;)

Only in large please.

Take a look there...

...and my son also wanted to say hello :)

An evening by the Sulejowski Reserevoir. Only in large!

I was trying to catch them for a long time! - yesterday (09.07) evening around 22:40 I finally found them while looking out from my window to the north. Only in large!

Some info:

Noctilucent clouds are tenuous cloud-like phenomena visible in a deep twilight. They are made of crystals of water ice. They are most commonly observed in the summer months at latitudes between 50° and 70° north and south of the equator.
They are the highest clouds in the Earth's atmosphere, located in the mesosphere at altitudes of around 76 to 85 kilometers (47 to 53 mi). They are normally too faint to be seen, and are visible only when illuminated by sunlight from below the horizon while the lower layers of the atmosphere are in the Earth's shadow. Noctilucent clouds are not fully understood and are a recently discovered meteorological phenomenon; there is no evidence that they were observed before 1885.
Noctilucent clouds can form only under very restrictive conditions; their occurrence can be used as a sensitive guide to changes in the upper atmosphere. Since they are a relatively recent classification, the occurrence of noctilucent clouds appears to be increasing in frequency, brightness and extent. It is theorized that this increase is connected to climate change.

More information about this phenomenon You may find here: en.wikipedia.org/wiki/Noctilucent_cloud

One of the many chapels on Góra Św. Anny (Saint Anna Mountain).

Only in large.