Contact information

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.

Sun

6.8.2022 at 13.06 - Turku, Nummenmäki (V)
Petrus Kurppa, Turun Ursa

Today, I was able to take pictures, when the sun was shining from an almost clear sky. A brisk wind finally made us move indoors with favor, when the clouds were crossing again. After a short break, more than hydrogen alpha, which is the sun imager's "candy". Sunspots can now be seen in abundance and are moderately large in size, so even in the image of the entire disk a penumbra around the spot can be seen beautifully. During shooting sessions, keep a cool head to assess whether to go into details with a barlow or continue to the next wavelengths. I ended up with the latter. As a pair of ...

Images: 2 pcs

Sun

4.8.2022 at 15.00 - 17.00 - Turku, Nummenmäki (V)
Petrus Kurppa, Turun Ursa

I was just about to bite into a pumpernickel over a cup of coffee, when a Turku-based sun photographer gave me a tip about a good view in the sun. Thanks only to Jan Laasanen, it was indeed a memorable sight on the surface of our nearby star! At first, the filming session seemed to dwindle as the clouds marched in, but in the end they just came to tease. Such large and spectacular eruptions can now be seen quite often when the maximum is approaching. Despite that, each time feels unique, as if you've never seen others before. Multi-image mosaic. DayStar Quark Chromosphere. TS Optics 80ED f...

Images: 2 pcs • Comments: 6 pcs

Sun

2.8.2022 at 15.00 - Turku, Nummenmäki (V)
Petrus Kurppa, Turun Ursa

A few words about the sun from last week's Tuesday. These were about to be buried in the table drawer when the weather was so bad, downright terrible. Seeing the daytime sky can often be bad simply because of local seeing, if the sun-baked roof of a neighbor's house is pointing in the direction of the sun, or the neighbor's grill is rattling in that direction. The exultant eruption on Thursday was already ready to show on Tuesday. Here are a few pictures in negative and positive. My attention was drawn to a small but peppery eruption that flickered on the other edge, from which the...

Images: 3 pcs

Sun

10.7.2022 at 17.40 - 21.05 - Nummenmäki, Turku (V)
Petrus Kurppa, Turun Ursa

In the sun, it feels as if there are general exercises for the coming maximum. The large and mustache-like filaments look funny in the picture of the whole disc, but how incredibly beautiful and transparent they look when you look closer! The shooting sessions on a cloudy and alternately sunny Sunday were divided into two parts. The first session included the Lunt60THa telescope and the ZWO ASI178MM. This camera is well suited for photographing the entire disk, as long as there are no large eruptions on both edges. Now, this was a bit of a challenge, so a mosaic of two images worked. While pro...

Images: 3 pcs

Sun

8.7.2022 at 21.20 - Turku, Nummenmäki (V)
Petrus Kurppa, Turun Ursa

With the leisurely conversation of the Ursa tower evening in Turku, I concluded that the weather would still be perfect for photographing the sun! As for the partly cloudy weather, there were no clouds in the direction of the sun, so I went straight home by bike and grabbed and went the hydrogen alpha assembly for testing. The idea is to use even the short moments, if not for filming, then at least visually. It would be sweet again in the sun, with sunspots, a large filament and several eruptions visible on the edge. The sun was already well on its way to shore, or at least behind the trees, w...

Comments: 2 pcs

Moon

7.7.2022 at 20.35 - Nummenmäki, Turku (IV)
Petrus Kurppa, Turun Ursa

While waiting for the evenings to get dark, I used Astronomik's IR Pass 742nm filter to photograph the Moon in the "day sky". A mosaic of two images. I also stared at my time visually through the eyepiece, although the lightness of the sky was still too bright at eight o'clock in the evening. The weather seemed to be quite calm, although there were no opportunities for a longer description as the Moon peeked through the skirts of the trees in the garden.

Sun

19.6.2022 at 12.00 - 14.00 - Nummenmäki, Turku (IV)
Petrus Kurppa, Turun Ursa

A rather windy day made me wonder if the description will be equal to anything. I took the risk, and luckily it was worth all the effort then. Our near-star with three different wavelengths, dubbed the "trifecta" among sun enthusiasts. Full disk image of the sun at the wavelength of calcium II K-light, visible light (solar continuum) and hydrogen alpha. Each of these opens up its own views on the awakening of the activity of the sun from the quiet life of the dormant years towards a tumultuous maximum.

Comments: 6 pcs

Sun

19.5.2022 at 15.20 - Turku, Nummenmäki (V)
Petrus Kurppa, Turun Ursa

Today I just had to get to know the new equipment because of the clouds, but it was a descriptive day today! Calcium K light (393.4 nm) showed a truly massive discharge, estimated to be more than 200,000 kilometers long. Unfortunately, this was already over when I had time to get the hydrogen alpha equipment attached to the telescope.

Comments: 3 pcs

Sun

9.5.2022 at 17.30 - Turku, Nummenmäki (III)
Petrus Kurppa, Turun Ursa

Is there anything to be said here in Turku other than that it seems that the pace is only accelerating when it comes to solar activity. Not at all as slow as last year! Today, the clouds took the best moments to capture, but yes, there always feels like something is catching on the camera. Now there were such great eruptions that I had to try my luck. Fortunately, these seem to be more and more common, so there is still enough to admire for the whole summer.

Sun

4.5.2022 at 13.00 - 15.00 - Turku, Nummenmäki (III)
Petrus Kurppa, Turun Ursa

The sun now shows so much and fine filaments along the surface that I decided to take a risk and try shooting even though the clouds were a dilemma throughout the day. The weather was not the best, but the sun looked beautiful. Filaments are available in many lengths, shapes and thicknesses.

Sun

28.4.2022 at 16.15 - Turku, Nummenmäki (IV)
Petrus Kurppa, Turun Ursa

Returning from the paseeru with the cat, my attention was drawn to the rather cloudless sky. The blacksmith was then left with a brief pleasure after the telescope and its pedestals had been pushed out. I was left waiting for a small gap in the cloud cover to test a new solar telescope mod. This is a standard detached from the Daystar SolarScout 60DS telescope that attaches to the other telescope with a 3D-printed adapter and a 2 "extension. The extension is preceded by an Optolong IR UV blocking filter. The sun was found and focused! Newton had more than enough tires, flat and a partially til...

Images: 2 pcs • Comments: 2 pcs

Sun

25.4.2022 at 14.00 - Turku, Nummenmäki (IV)
Petrus Kurppa, Turun Ursa

As the forecast turned perhaps once again towards cool and cloudy days, one had to take pleasure in still capturing the sun today. And it was just a good moment, a big eruption was right on the edge.

Images: 2 pcs • Comments: 4 pcs

Sun

24.4.2022 at 13.30 - Nummenmäki, Turku (IV)
Petrus Kurppa, Turun Ursa

Clear with gusts of wind. I tried filming in the backyard. The wind waved the pedestal for this from here, but something came to scratch.

Images: 2 pcs

Sun

22.4.2022 at 14.18 - Turku, Nummenmäki (V)
Petrus Kurppa, Turun Ursa

Have a sunny weekend! On the surface of the sun now praises the handsome cluster of sunspots, which have been admired in peace for a couple of days.

Sun

16.3.2022 at 13.30 - Nummenmäki, Turku (V)
Petrus Kurppa, Turun Ursa

So it’s spring when you can listen to the birds singing again and shoot the sun in your backyard! Of course, it is good for the birds to be on the branches of the trees in the yard, but in the shallow sun the shade is still often shaded by birch and willow. Its own lyst is to try to identify the tree species by circling through a hydrogen alpine tube, dark silhouettes are visible as long as there is an inaccurate sun in the background. A literally beautiful view falls on the surface of our near star as the maximum approaches day by day. After a long winter, it’s downright refreshing to see for...

Images: 2 pcs

Sun

25.7.2021 at 12.00 - 14.55 - Turku, Nummenmäki (V)
Petrus Kurppa, Turun Ursa

From the idle, we are tinkering with the solar telescope again today. Fine filaments along the surface, tiny prominencies at the edges.

Images: 2 pcs • Comments: 2 pcs

Sun

17.7.2021 at 14.00 - Turku, Nummenmäki (V)
Petrus Kurppa, Turun Ursa

Saturday sun photos. Nothing particularly spectacular in white light. On the hydrogen side, one finer eruption on the edge. The processing of calcium K light images was still pending, but watching the live screen is the treat of this narrowband shooting! Unlike white light and hydrogen alpha, whose live screen can of course be adjusted better, at least for Firecapture, with Lunt’s calcium module, the image is already really sharp and detailed without any commercial hints. Sometimes I have to put a video or pictures just for preview views.

Images: 2 pcs

Sun

11.7.2021 at 17.00 - Nummenmäki, Turku (V)
Petrus Kurppa, Turun Ursa

The second time toden says! In the morning I gathered in the garden of the stock, only to see the vicious-looking clouds covering the whole sky. After all, no water dripped on the neck. In the afternoon, the clouds were still a nuisance, so I only brought out the hydrogen alpha stock and, waiting for a suitable gap, watered the French herbs to rhythmize. Would clouds go to the wire? And yes they did! I got to grab a few videos before the sun disappeared behind a tall pine tree. I also invited my neighbor to admire the visually well-seen protuberances. There were really plenty of them. Negative...

Comments: 3 pcs

Sun

10.7.2021 at 14.00 - 15.00 - Nummenmäki, Turku (III)
Petrus Kurppa, Turun Ursa

A quick peek into the garden suggested that you could now try your luck with the new hardware. Lunt's CaK 12 mm filter arrived recently, so it burned a bit to get to try the headlights. With this device, viewing is not possible for the most part, but the details of the chromosphere were seen really nicely from a slightly different tip than the hydrogen alpha on the computer screen. Seeing was poor. As a fun surprise, the dim dudes found in the post-processing. They do not appear in this version. Sunspots coming up again! The sun depicted in the light of the K-line of calcium is a mosaic of...

Images: 2 pcs

Sun

4.7.2021 at 12.00 - 16.00 - Turku, Nummenmäki (III)
Petrus Kurppa, Turun Ursa

At noon in the summer heat, the sun at times looked like a crackling frying pan. The photographer started to have similar moods after many hours of the session. A little heating was worthwhile, as the sun pampered the viewer and the photographer today with such a number and form of hydrogen alpha protuberances, active areas, sunspots, spiculas ... In the close-up of the hydrogen alfa, a protuberance in the shape of a directional sign and a smaller spicula forest appear nicely. In white light, a large sunspot can still delight. Soon it is then going to the other side. The faculaet now appears n...

Images: 3 pcs

Search result contains observations from time period 1.1.2000 klo 00.00 - 7.8.2022 klo 18.45.