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

Ursa Astronomical Association

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

Auroras seen through breaks in the clouds

12.10.2021 at 21.00 - 23.59 - Tampere (III)
Kari A. Kuure, Tampereen Ursa

Northern lights from cloud crevices and partly through clouds. The G1-class magnetic storm brought with it northern lights, which were also visible in Tampere. However, the cloud cover was relatively strong, so this time we only had to settle for repos visible through cracks and through the clouds. I also uploaded the video to YuoTube's Ursa channel in Tampere, the address is AB2021102

Images: 4 pcs

Active aurora band

22.9.2021 at 03.00 - 03.20 - Tampere (III)
Kari A. Kuure, Tampereen Ursa

In the middle of the night, the northern lights brightened again and here are a few pictures of this eruption.

Images: 7 pcs

Quiet aurora arc

21.9.2021 at 23.00 - 02.00 - Tampere (II)
Kari A. Kuure, Tampereen Ursa

We see the northern lights in the sky lit by the full moon. As the cloud cover receded, the north camera on the observatory recorded a dim arc of northern lights and occasionally associated rays. The bright moonlight brightened the background sky so the contrast remained low. Times are UTC times.

Images: 8 pcs • Comments: 2 pcs

Sun

10.9.2021 at 12.30 - 12.35 - Tampere (III)
Kari A. Kuure, Tampereen Ursa

As the cloudiness receded a bit, I managed to find a relatively clear opening in the upper clouds from which I photographed the Sun and its abundant spots. However, the aperture was not entirely clear as a thin upper cloud did appear, however, and it emerged in the post-processing of the image, as everyone will surely notice it in this image. Today’s sunspot count, 124, is relatively high at this time of the sunspot period. Indeed, it appears that the activated has evolved remarkably rapidly in a higher direction when compared to predictions. On September 11, 2021, I added a 2 × magnified and ...

Images: 2 pcs

Aurigidit

31.8.2021 at 19.30 - 01.30 - Tampere (IV)
Kari A. Kuure, Tampereen Ursa

A total of 18 aurigids were recorded on Ursa's new weather camera in Tampere on its first night. In addition to these, two sporades were recorded and one aurigid was recorded in the east camera, but it is probably the same as that recorded in the north camera. We’ve switched to using UTC time in camera timestamps because it looks like we won’t be able to get rid of daylight saving time for anything in the very next few years.

Images: 6 pcs

Bright night shining clouds

10.8.2021 at 23.00 - 02.30 - Tampere (IV)
Kari A. Kuure, Tampereen Ursa

The night clouds appeared at about 11 p.m. and were visible in the morning at night. Here are some pictures and videos on YouTube https://www.youtube.com/watch?v=XVFs_4ZlWCw

Images: 8 pcs

Bright night shining clouds

19.7.2021 at 00.00 - 03.00 - Tampere (IV)
Kari A. Kuure, Tampereen Ursa

The night cloud season in Tampere finally began. A few nights ago there were the first signs of the beginning of the season in the sky, but then they were no longer visible. Now the nights have already darkened a bit and the season has begun. Here are a few pictures and videos at https://www.youtube.com/watch?v=BaLO_gIUOxY

Images: 7 pcs

Sun

3.7.2021 at 09.20 - 10.30 - Tampere (IV)
Kari A. Kuure, Tampereen Ursa

A significant flare eruption in the Sun was recorded in the photograph yesterday, July 3, 2021. This flare occurred about 7 hours earlier than the attention-grabbing X1.6 (at 17.29), but still in the same active region. Personally, this is one milestone as a sun photographer, because never before have I been able to describe the flare going on and yet just at the maximum moment. To be quite precise, then this was actually the second time, because a few days ago I managed to record a very small flare from this same area at maximum time, but it is not counted as an eruption but as background noi...

Images: 7 pcs

Sun

28.5.2021 at 14.32 - 14.33 - Tampere (III)
Kari A. Kuure, Tampereen Ursa

During the spring, I have managed to observe the Sun quite often and there has been motivation for it, as comma groups have been visible almost all the time. Most of the observations have, of course, been made from your own yard, as the weather conditions have provided only short moments for making the observations. Fortunately, sightings at the observatory have also been possible, though not quite as often as I would have liked. The picture below is again taken in the yard. The two visible comma groups are swirling out of sight, but by the time they have developed relatively strong flare erup...

Sun

30.4.2021 at 10.45 - 12.00 - Tampere (III)
Kari A. Kuure, Tampereen Ursa

Again a set of pictures of the Sun. The weather was relatively good although the latter part of the observations went as the clouds dodged. The first image (orange) was taken in broadband visible light. The second and third images are taken in a narrowband (red) at the wavelength of the Hydrogen-alpha line. The quadrilateral image was taken in a cap band (blue-violet) at the wavelength of the Ca-K line.

Images: 4 pcs

Sun

21.4.2021 at 09.50 - 11.00 - Tampere (III)
Kari A. Kuure, Tampereen Ursa

Sun photography with many devices. On Wednesday, April 21, 2021, the weather conditions were so good that solar imaging with more than one device was possible. Although the weather was not perfect. the end result was reasonable. The main image was taken with an Ikharos telescope, an Astrosolar filter and the camera was Image Source. The image is stacked from five separate shots, each with about 350/100 frames. The second image is 10 still images taken and stacked with Nikon. Figures 3 to 5 were taken with a Lunt H-alpha telescope, the images were also composed of five separate videos as above....

Images: 6 pcs

Sun

19.4.2021 at 14.05 - 14.10 - Tampere (IV)
Kari A. Kuure, Tampereen Ursa

As the sunny days continue, observations of the Sun must be made almost every day, or at least when there is something to describe in the Sun. Today there were really two groups of sunspots.

Sun

16.4.2021 at 13.30 - 13.40 - Tampere (III)
Kari A. Kuure, Tampereen Ursa

Although it has been sunny in recent days, the observational climate has not been the best. There hasn’t been very much to describe in the sun either, the prominences have been small and dim and even though I’ve been filming them for a couple of days now, they don’t get any weird observation. Still images can still be taken even though the comma groups are very small and, above all, the commas themselves are almost "spiritless." But stacking the top 10 out of 34 images still brings out something. AR 2814 has been visible for a long time, but the comma group next to it, which is not numbered by...

Moon

21.3.2021 at 19.32 - 19.32 - Tampere (V)
Kari A. Kuure, Tampereen Ursa

Growing crescent moon in a starry evening. I had to grab a picture of it, here ten pictures stacked. The purpose of stacking was to remove any image softening caused by strong winds. Well, it was little anyway, so even a single picture would have been worth it. However, the accuracy clearly increased.

Sun

8.3.2021 at 10.00 - 10.05 - Tampere (III)
Kari A. Kuure, Tampereen Ursa

Sunspot group AR12806, which disappeared on 6.3. and reappeared the next day, is visible in this image at the bottom right of the Sun. There are developing areas on the left. At this point, it is difficult to say whether commas will develop on them. Active areas will receive an identification number after sufficiently long-lived commas have been detected in them. A pore that has only been visible for a couple of hours may not be enough to get the badge. Four sitll images have been stacked and both contrast and brightness have been adjusted.

Active aurora band

2.3.2021 at 21.00 - 04.30 - Tampere (III)
Kari A. Kuure, Tampereen Ursa

The Northern Lights Night was recorded on the weather cameras in Ursa, Tampere. Northern lights occurred in several episodes that were remarkably short-lived. There were very calm and relatively dim belts between them. The bright moonlight flattened the view in the morning, so the best possible impression was not created by the cameras. Here's a picture of the whole night. I made a lamp from the northern lights, which can be seen at https://www.youtube.com/watch?v=ahPIZ8ZtxPo

Images: 8 pcs

Sun

2.3.2021 at 09.55 - 10.00 - Tampere (III)
Kari A. Kuure, Tampereen Ursa

The magnetogram image of the sun at the southern latitudes showed a magnetic disturbance, as in the sunspots. I concluded that a comma group could be emerging in the area. The dots would certainly be so small at this point that they would certainly not appear in a single image. So I took a series of pictures and stacked 12 still pictures, making the dim spots more clearly visible. I marked the area with a white ring. This active area has not yet been numbered.

Auroras seen through breaks in the clouds

1.3.2021 at 03.40 - 04.20 - Tampere (II)
Kari A. Kuure, Tampereen Ursa

Here are a few pictures of the dim northern lights, the visibility of which was hampered by both the thin upper cloud curtain and the bright moonlight. Personally, when I wasn’t seeing these, I judged them to be so dim that my eyes wouldn’t have distinguished them other than in a very dark place.

Images: 8 pcs

Sun

24.2.2021 at 13.40 - 15.30 - Teide, Teneriffa, Espanja (III)
Kari A. Kuure, Tampereen Ursa

Prominence sightings remotely. Here, the couple describes the Slooh Observatory with a remote-controlled solar telescope. The weather wasn't the best for you either, so this time I was content with mere pictures of prominence. The first image is combined from two images and the Sun’s overexposed surface is covered with a black mask. The second series of images is taken about every 10 minutes from the highest prominence seen. A closer look at the pictures shows how prominence develops. This time, the interval between the images was slightly short, as the changes become more pronounced in th...

Images: 2 pcs

Sun

11.2.2021 at 15.00 - 16.30 - Gran Canaria, Teide (IV)
Kari A. Kuure, Tampereen Ursa

The sun in Finland is too low for us to create images. Here’s a picture taken a little further south with the Slooh Observatory’s remote-controlled solar telescope in the light of the H-alpha line. The image is combined from two images whose bells are indicated in the image.

Search result contains observations from time period 1.1.2000 klo 00.00 - 18.10.2021 klo 20.23.