The Halo Vault

By Marko Riikonen and Jarmo Moilanen These photos show a colored patch at the bottom of Moilanen arc. We don't quite know what it i...

On the 19th October 2013 Zbyněk Černoch was in Salzburg keeping an eye for halo events, since high cirrostratus clouds were rolling in. As t...

By Marko Mikkilä, Jarmo Moilanen and Marko Riikonen After having been hunting diamond dust halos since darkfall, at 1am we withdrew ...

By Jarmo Moilanen and Marko Riikonen This odd radius display appeared on the night of 17/18 January in Rovaniemi at -29° C. Visible ...

By Marko Riikonen and Nicolas Lefaudeux This display is far from being impressive. But it has an interesting combination of odd ...

On the night of 20/21 January we photographed oriented pyramid crystal halos in the spotlight beam on two occasions. The first occasion, ...

More halo and crystal photos from the 20/21 January night. While this second crystal sampling and photographing session was under way, ...

The night of January 20/21 in Rovaniemi was a night of odd radius halos. Here are shown mostly crystals collected during a half hour pe...

A funny coincidence that a halo-observer may want to experience is travelling to Egypt and seeing some pyramidal crystal hal...

I saw this display in Oulu on 17 September 2001. Because the photos have not been around in the internet, I dare to make posting even th...

" Atmospheric Optics " has a newly updated section about halo forming ice crystals - check under " What...

Elliptical halo appeared in the skies today on 26. March 2006. This was one of those rare long lasting displays, with almost an hour dura...