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Skywarden,
Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki
taivaanvahti(at)ursa.fi

Ursa Astronomical Association

10 observations and 1 comments in queue.

Only observations that have a description and at least one image attached.

Rare halos

18.3.2021 at 08.33 - 08.45 - Rovaniemi (IV)
Marko Riikonen

In the morning I went to Jyrhämäjärvi for surface huts. I found that the not-so-many 22r is visible and seems to be 46 ° from the ring as well. I first photographed the crystals, there was a variable shading cloud in the direction of the sun, so for that reason too, this order was good. The crystal recording had to stop when the wind picked up and in the gasoline the crystals began to vibrate. Anyway, the time was right for a change of activity, as the cloud was shining and the sun was shining properly. But the 22 ° ring was gone. I didn't see a trace of it. I started photographing crystal...

Images: 5 pcs

Rare halos

16.2.2021 at 14.31 - 14.47 - Rovaniemi (IV)
Marko Riikonen

On February 16, the last stack series of the surface halibut day in Kemijoki. In the place where these pictures were taken, the screening seemed to me to be the most pyramid-like because of the 1.5 km journey I walked along the river. This good point though was not very long so to get more pictures on the stack, I photographed another parallel line 1-2 meters away from the previous one. The stack thus received 470 images. Other stacks can be found behind the "more similar observations" link. 1. 2xusm, bgr. These now show - especially in the lower part - that the 28 ° ring on the horizon ghoste...

Images: 8 pcs

Rare halos

14.3.2020 at 08.15 - 08.38 - Tampere (IV)
Marko Riikonen

The thin layer of snow on the lake ice had 22 rings. The sparkles were nothing bright, probably due to the small crystals. But they were reasonably dense. Since the inner edge of the ring was vague, I took a long series of stacks as I am used to combining this impression with pyramid halves. The stack - which I took in 23 minutes - came up with 290 pictures after rejecting a few bad pictures. Attached are alternately unpaired and mirrored version pairs processed in Photoshop 1 pair: doubling + HDR Toning 2 pairs: background removal (BGR) + HDR Toning 3 pairs: BR + BGR 4 pairs: background remov...

Images: 8 pcs

Search result contains observations from time period 3.8.2000 klo 13.02 - 15.08.2022 klo 01.22.