Contact information

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

Ursa Astronomical Association

2 observations and 0 comments in queue.

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

Half-sky auroras

18.8.2022 at 00.01 - 03.28 - Juva (IV)
Petri Martikainen, Ursa (Itä-Suomi)

I almost had time to go to sleep, but I still came to look at the sky from the balcony. The clouds had receded and the aurora borealis blazed directly overhead. Then I had to go and photograph them. Timelapse shot at 1:52-3:07.

Images: 6 pcs • Comments: 1 pcs

Rare halos

17.8.2022 at 10.00 - 18.40 - Juva (IV)
Petri Martikainen, Ursa (Itä-Suomi)

Pyramid Halo Day. The temperature was approaching thirty, and there was no sign of rain or thunder. The main ring was faintly visible already in the morning, the pyramidal halos only got up to speed in the afternoon. This time too, there really wasn't any spectacle to be seen, but by stacking you could find many. First, a 23° upper parhelion stood out in the sky, and sometimes you could also sense the existence of 18° parhelions (picture 7). After nightfall, a suspiciously thick base ring was visible in the sky (picture 4). Pino revealed that the powerful 24° tire was partly to blame. The ...

Images: 7 pcs

Rare halos

15.8.2022 at 12.00 - 20.00 - Juva (IV)
Petri Martikainen, Ursa (Itä-Suomi)

The faint halos of the hot day appeared in the sky in the midday countries. I was in town on business, so the documentation was initially limited to a cell phone snap I took on the way home (picture 6). It shows 23 slaika. At home, I immediately lit the pile on the fire, even though there was almost nothing to distinguish from the cloud cover (picture 3). From the first 120 images, more pyramidal halos seemed to come off in the stack, so I took another stack of 120 and 300 images. Unfortunately, the halos were so weak that certain shapes could not be identified even with hard processing. 23ypa...

Images: 6 pcs

Rare halos

8.8.2022 at 17.50 - 18.10 - Juva (IV)
Petri Martikainen, Ursa (Itä-Suomi)

Kind of lucky. In Illansuu, during a routine check, I noticed a weak zyk in a fairly cloudless sky. I set the camera to shooting readiness, but I had to realize that the zykki had already gone. However, just for fun, I put a stack of 120 photos on fire. My expectations were zero, but I still checked what was being filmed. At first nothing, but then very sharp halos drawn by a passing cloud. In the end, 77 pictures ended up in the pile. Parry was hiding there. In a timelapse made from a stack of images, you can sort of distinguish halos in the sky. Figure 1. Stack of 77 images at 17:56-18:09 (3...

Images: 4 pcs • Comments: 1 pcs

Rare halos

3.8.2022 at 08.30 - 15.30 - Juva (IV)
Petri Martikainen, Ursa (Itä-Suomi)

Wednesday's halos in chronological order. To start the morning, there was a basic ringula, sauri, zykki and also a stack of 46r. While photographing them, the attention was drawn to the 120° side sun, which was visible as a lonely brightening in the clouds. I reversed the shooting direction and managed to take a small stack before the brightness faded (photos 1-2). An hour later, a moderately sharp right Sauri with a piece of the horizon ring was visible in the sky (picture 5). Stacks of barbs were found around it, which could perhaps be from alternative Lowitzes (pictures 3-4, Sun altitud...

Images: 8 pcs • Comments: 1 pcs

Rare halos

26.7.2022 at 16.10 - 16.20 - Juva (IV)
Petri Martikainen, Ursa (Itä-Suomi)

Fourth 23° parhelia within a week. Not much else has been seen... This time the streak was clear and quite well formed, no other halos were visible at the same time. I was able to capture this stack of 20 pictures from a gap in the lower clouds. The bigger pile brought nothing but disturbing clouds to the picture. The wind was still from the south today and it was warm with almost freezing temperatures. Figure 1. 20 picture stack at 16:16-16:18 (2xusm). Figure 2. The br version of the previous one. Figure 3. One raw image of the stack.

Images: 3 pcs

Rare halos

25.7.2022 at 12.50 - 16.50 - Juva (IV)
Petri Martikainen, Ursa (Itä-Suomi)

Extremely weak halos in the afternoon. There was a good-looking upper cloud in the sky, but halos didn't seem to appear at all. Not long ago, one afternoon, I separated something halo-like and took a stack of 20 photos without a proper concealer. A 23° parhelian halo was found in the stack during processing (pictures 1 and 2). You couldn't be sure when the lens cover was used as a cover and you couldn't know the position of the Sun. I waited for a new opportunity, but nothing appeared. In the end, there was a suitable gap between the lower clouds and you could guess the existence o...

Images: 5 pcs

Bright night shining clouds

23.7.2022 at 00.01 - 02.00 - Juva (IV)
Petri Martikainen, Ursa (Itä-Suomi)

The intense lightning seen in the radar images between Jyväskylä and Kuopio was intended to be depicted, but yes, the night clouds were more spectacular. A few drone shots cropped from wider panoramas. The distance to the thundercloud visible in the pictures is more than a hundred kilometers.

Images: 3 pcs

At least 10 lightning strikes seen

23.7.2022 at 00.01 - 02.00 - Juva (II)
Petri Martikainen, Ursa (Itä-Suomi)

A few flashes of lightning far away from the thunder cloud that moved between Jyväskylä and Kuopio. There was a lot of lightning, but due to the long distance (more than 100 km) I didn't get many pictures. There was some pollution in the air. Pictures 1-2 with a drone, picture 3 with a shaker. Figure 4 shows a capture from the Finnish Meteorological Institute's rain radar image around the same time. The night clouds shone handsomely.

Images: 4 pcs

Rare halos

21.7.2022 at 12.00 - 15.00 - Juva (IV)
Petri Martikainen, Ursa (Itä-Suomi)

Hellejäut's meaningless halos in reverse order. First, only a basic gyre with an overhang was visible (picture 3), later on a few occasions a very weak solitary 23° parhelium (pictures 1 and 2). In figure 4, halves of figures 2 and 3 have been combined to facilitate comparison. Figure 1. A single raw image at 14:38. Figure 2. Stack of 20 images at 14:38-14:40 (2xusm). Figure 3. Stack of 100 images at 12:58-13:08 (2xusm). Figure 4. Combined halves of Figures 3 and 4.

Images: 4 pcs • Comments: 1 pcs

Rare halos

20.7.2022 at 10.50 - 11.05 - Juva (IV)
Petri Martikainen, Ursa (Itä-Suomi)

Well, the observation report had been left somewhere on the trip. That's what I said, that there have been very few halos on offer this summer, and this show wasn't bad either. For a while, there was a 23-degree parhel, from which I managed to take one stack. Figure 1. The first image of the stack without processing at 10:54. Figure 2. Stack of 80 images at 10:54-11:01 (3xusm).

Images: 2 pcs

Primary rainbow

15.7.2022 at 18.45 - 19.30 - Juva (III)
Petri Martikainen, Ursa (Itä-Suomi)

Evening rainbows. First, a couple of drone photos from 120 meters and then a few more traditional photos from the ground. Picture 3 was taken shortly after the rainbow appeared. At that point, even with the naked eye, the main rainbow looked especially thick in its upper part, even though it wasn't very bright. By clicking on the picture and the next two squares (pictures 4, 5, 6), a double arc appears. I now mark it as an anomalous arc when it seems that the arcs are farther apart at the top than at the bottom. Or is it just an interference arc? The last picture half an hour later shows a...

Images: 7 pcs

At least 10 lightning strikes seen

12.7.2022 at 21.00 - 23.00 - Joensuu (IV)
Petri Martikainen, Ursa (Itä-Suomi)

I had been waiting for some time for suitable weather for a work gig in the landscapes of Patvinsuo. The forecasts promised such attractive weather for Tuesday (picture 8) that I had to go and visit it. It was warm there all day, 26-28 degrees, the sun was shining, and there was no sign of rain. The distant rumble of thunder was almost continuous from five in the evening. In the evening I was informed that there was quite a thunderstorm going on in Joensuu. Joensuu's cloud can be seen in the panoramic photo I took from Patvinsuo's Lahnasuo around the same time (picture 5). On the way b...

Images: 8 pcs

Tertiary rainbow

5.7.2022 at 21.05 - 21.15 - Juva (III)
Petri Martikainen, Ursa (Itä-Suomi)

For a long time, even small rain showers in these landscapes. Illansuu even saw a rainbow for a while. Since the situation was favorable for the arcs on the side of the Sun, I concentrated on hunting them. The third and fourth rainbow caught the first picture right away (pictures 1-3). I also picked up a stack, but it didn't bring anything new to the observation (20 pictures in a stack, pictures 4-5). At the very beginning, I took one picture in the direction of the main rainbow, and slightly surprisingly, a piece of the reflection rainbow also seems to come off from it (pictures 6-8). The...

Images: 8 pcs • Comments: 1 pcs

Hyvin heikkoja yöpilviä

5.7.2022 at 01.20 - 01.30 - Juva (I)
Petri Martikainen, Ursa (Itä-Suomi)

I guess those were night clouds. You could just barely see it with your naked eyes. Picture 1 is an unprocessed picture, picture 2 is the same unprocessed, and in pictures 3-5 there are always the next 10 images stacked and unprocessed. Shooting direction north.

Images: 5 pcs

Several halo forms

22.6.2022 at 13.00 - 14.00 - Juva (II)
Petri Martikainen, Ursa (Itä-Suomi)

A weak afternoon halo, from which the horizon ring came off. There was no sign of the 46-degree halos. Figure 1. Stack of 60 images from 1:40 pm to 1:46 pm (3xusm). Figure 2. Last image of the stack without processing.

Images: 2 pcs

Rare halos

14.6.2022 at 10.30 - 15.00 - Juva (IV)
Petri Martikainen, Ursa (Itä-Suomi)

Halorinkula was visible in the sky for several hours. A weak 9 ° ring was also distinguished in the first stack, which was no longer found in later stacks. Figure 1. Stack of 60 images at 10:47-10:53 (3xusm). Figure 2. The previous bg version. Figure 3. The first image of the stack without processing.

Images: 3 pcs

Primary rainbow

13.6.2022 at 20.10 - 21.00 - Juva (III)
Petri Martikainen, Ursa (Itä-Suomi)

In the evening, a couple of rain clouds were created by Rainbows. Here are a few shots of the best stage from 120 meters and photographed from the ground. Figure 1. Limited version of the drone HDR "wide angle panorama" (3x3 images). Figure 2. Dronen 180 degree HDR panorama (3x7 images). Figure 3. Cropped version of the drone's 48 megapixel still image. Figure 4. View from the surface of the earth, single untreated image. Figure 5. Stack of 30 images cluttered, interference arcs appearing better.

Images: 5 pcs

Lightning photo

13.6.2022 at 17.00 - 17.30 - Juva (III)
Petri Martikainen, Ursa (Itä-Suomi)

Over the afternoon, several showers of rain and thunder passed. This seems to be the most spectacular of them. I filmed a cloud for a video with a drone and one of the flashes was captured. A cropped screenshot of the video as the main image and the same in slow motion at the original size. In Figures 3-4, the same thundercloud is still present, and in Figure 5, the Finnish Meteorological Institute's rain radar image, where this cloud is at the most abundant lightning.

Images: 5 pcs

Several halo forms

13.6.2022 at 14.00 - 14.10 - Juva (II)
Petri Martikainen, Ursa (Itä-Suomi)

Eye-catching bright 22ys at the top of a drizzle cloud (main image, untreated). 22r and 46r were also found in the stack of 40 images (Figures 2 and 3).

Images: 3 pcs

Search result contains observations from time period 1.1.2000 klo 00.00 - 19.8.2022 klo 11.03.