Monday, 30 May 2011

New book on halos

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The Finnish Astronomical Association URSA has just published a new book on halos by Marko Riikonen. This book combines the latest halo scien...
15 comments:

Liljequist superparhelia & a nucleation agent gun

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This Liljequist superparhelia was observed in the spotlight beam on 5 January 2011. The lamp is about a degree or two below the horizon, thu...

Atmospheric optics meeting of 2011 in Finland

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Finnish Atmospheric optics enthusiasts met on 27-29 May 2011 in the Artjärvi observation centre. The topics of the presentations varied from...
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Wednesday, 6 April 2011

Lunar diamond dust halo display in Rovaniemi, 7/8 December 2008

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Before the moon halos appeared, diamond dust was so thick that moon did not shine through and I photographed in spotlight beam. As the the d...
Thursday, 31 March 2011

South Pole odd radius halo display 6 February 1999

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This was a long lasting display with faint odd radius halos. The scanned slides here only show 9° stuff, but there was more, also the 20° an...
Sunday, 27 March 2011

South Pole halos 5 February 1999

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Basic display at South Pole. The third image is taken by Jarmo Moilanen. The last two images show a contrail display. Originally published i...
Thursday, 24 March 2011

Halo display at South Pole on 4 February 1999

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Just scanned this one from my slides. It is basic South Pole summer season display. In the third and fouth image there is something at the h...