Low altitude birch pollen corona 22.5.2012

Observed phenomena: Pollen corona
Light source: Sun
Origin: Birch pollen

Date: 22.5.2012
Time: 20:45
Observing place: Tampere, Finland
Observing method: Photography
Technical information about photographing equipment: Camera: Canon EOS 1000D, lens: Canon EF-S 18-55mm

On 22th of May 2012, I observed a nice low altitude birch pollen corona in Tampere, Finland. The birch pollen coronas are only slightly oval -shaped with high solar altitude, but when the Sun is at low altitude, the pollen corona gets stretched vertically and the oval -shape of the corona gets intensively pronounced!

Pollen corona caused by pollen of birch, the Sun was at low altitude, and the corona is much larger than the one that can be seen when the Sun is at high altitude. 22.5. 20:45, Tampere, Finland.
Birch pollen corona with low solar altitude, observed on 22th of May 2012 @ 20:45 in Tampere, Finland
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Observing crescent Venus 8./9.5.2012

Date: 8./9.5.2012
Time: 23:20-00:15
Observing site: Kuru, Ylöjärvi, Finland
Instrument: L102/1000mm (4” Refractor)

NELM: 3,0
Weather: Clear sky, some high clouds

Objects observed: Venus

Planet Venus was still visible during the nights of early May at low altitude in NW sky. I observed Venus in 8th of May at 23:25, and then Venus appeared as a thin crescent. I made the observation in Soljastensuo -wetlands area, which is situated in SW corner of the Seitseminen nationalpark, Finland. While I was doing the observation, the sky was already light, NELM was about ~3. The air was a bit chilly, and frogs were having a noisy concert in the swamp – which made very exotic atmosphere to the light spring night!

Venus 8.5.2012
Crescent Venus observed on 8/9.5.2012 in Soljastensuo, Seitseminen National Park, Finland

Halo display 7th of May 2012

Observed phenomena: Halo phenomena
Light source: Sun
Origin: High clouds (cirrostratus)
Observed halo forms:

  • 22° halo
  • Upper tangent arc
  • Lower tangent arc
  • Parhelia
  • Parhelic circle

Date: 7.5.2012
Time: 16:10-16:35
Observing place: Ikaalinen, Finland
Observing method: Photography
Technical information about photographing equipment: Olympus μ 1030 SW

I observed a nice little halo display while working in the Kovero traditional farm in Seitseminen National Park, Finland. This halo display consisted of common halo forms, but it was still fun to watch! The parhelic circle wasn’t visible visually, but it became visible in the photos with unsharp mask.