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Ursa Astronomical Association

Newest commented observations

Active aurora band

17.10.2021 at 21.40 - 22.10 - Tampere (III)
Otto Ranta-Ojala

Pilvisen syksyn keskelle osui pitkästä aikaa edes osittain selkeä taivas. Bz oli pyörinyt -7nT hujakoilla jo aikaa, joten päätti käyttää Näsijärven rannalla koittamassa onneani. Taivaalla näkyi reilu ajan ajan kaksi himmeää kaarta, mahdollisesti eteläisempi aktivoitui n. 21:46. Kaaressa näkyi ihan mukavaa liikettä, mitä sain tallennettua videolle. Yöstä on timelapse/videokooste sivut: edit: Ei meinaa onnistua kertomuksen kirjoittaminen. Automaattikääntäjä kääntää sanoja suomesta englanniksi ja takaisin suomeksi.

Images: 2 pcs • Comments: 1 pcs

Other storm phenomenon

17.10.2021 at 20.01 - Turku (III)
Paula Mattila

After sunset, a deaf cloud came from the north after another. The first of the clouds also showed mammoths.

Images: 2 pcs • Comments: 2 pcs

Quiet aurora arc

17.10.2021 at 20.30 - Mäntyharju (II)
Markku Siljama, Ursa (Etelä-Suomi)

A calm arc of northern lights in the north at an altitude of about 10 degrees. The magnetic field of the solar wind was good but the speed unhappy. The result was a dim arc.

Images: 3 pcs • Comments: 1 pcs

Telescopic comet Churyumov-Gerasimenko

17.10.2021 at 00.05 - 06.00 - Orimattila, Artjärvi, Viestikallio (III)
Jorma Ryske, Etelä-Suomen kosmol. seura

67P / Churyumov-Gerasimenko presents his handsome almost 20 'long tail here, even though he is only a mag10 comet. 67P / CG is relatively close at a distance of 0.44au from Earth so Koma’s morphology is also starting to show. Figure 2 shows a 50 minute exposure with a narrow band cyan radical gas CN 3883Å filter treated with CometCIEF. It distinguishes two jets both in the direction of the normal tail PA 240 ° and also in a curved forward jet in the direction PA 110 °. Picture 1) 20x60s, L / Clear filter, 2021-10-17 02: 30UT, FoV 28'x18 ' Figure 2) 10x300s, narrowband 387nm / 15nm ...

Images: 2 pcs • Comments: 1 pcs

Starry sky image

13.10.2021 at 22.00 - 00.00 - Järvenpää (III)
Eemil Pietilä, Ursa (Etelä-Suomi)

The constellation of Swan and the Sadr region there, as well as the fog of North America, photographed with about 2 hours of exposure in the middle of the city. The purpose was to test a 50 mm lens found in stock for star photography. It seemed to work relatively well. The details now didn’t come out so closely, but the overall picture is pretty jees. At the same time, a self-made heater also became tested to work. And, of course, I didn’t notice taking a picture of that tuning.

Comments: 2 pcs

Starscape image

13.10.2021 at 20.51 - Laitila (III)
Riku Poskiparta, Porin Karhunvartijat

We went with the hostess once again for an evening ride, this time to Laitila Black Lake. We stepped onto the beach to see how the Milky Way would look right. Well, it was visible. My wife already had camera stacks with me by the beach, but I still have it in the car, so the tripod ... the camera is always in my pocket. quickly get a tripod from the car that just didn’t have time for the scenery to change, didn’t have time and grabbed the best picture I’ve ever taken on my cell phone.

Comments: 2 pcs


14.10.2021 at 11.30 - 11.45 - Nurmijärvi (IV)
Johanna Vaurio-Teräväinen

On a foggy morning, a clear fog arc on the edge of the foggy area

Comments: 2 pcs

Several halo forms

14.10.2021 at 14.44 - 14.58 - Hanko (III)
Nyman Pirjo

This halo phenomenon was seen on 14.10.2021 in the Hanko sky above the sun at approximately 14.44 - 14.58. Could it be an arc of a zenithal environment or some other arc? For the first time I saw such a halo. Pretty special sight. A small side hall of the sun appeared at almost the same time.

Comments: 3 pcs

Primary reflection rainbow

13.10.2021 at 09.50 - Tornio, Itäranta (IV)
Tuula Sillanpää

A different rainbow was visible above the Tornio if there were reflections of the arch on the side.

Comments: 3 pcs

Half-sky auroras

12.10.2021 at 22.00 - 01.15 - Pelkosenniemi ja Savukoski (IV)
Anu Tossavinen

Encouraged by forecasts (both weather and Northern Lights), the car trip to a clear area rewarded with a myriad of images. Shapes and colors changed almost all the time. Pictures 1-3 Suvanto, Pelkosenniemi and pictures 4-5 Savukoski approx. 00.45-01.15.

Images: 5 pcs • Comments: 1 pcs

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