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Ursa Astronomical Association

An asteroid passed on front of a star on Oct. 19

21.10. On Tuesday at 01:50 Petri Kuossari photographed an occultation by asteroid 980 Anacostia in Tervakoski, Janakkala. The about 70 kilometers wide asteroid was 1.308 AU from us at the time of the event and passed on front of a 10,5 magnitude star. The video Kuossari made shows the occultation beautifully combined with a light curve. Kuossari sent the observation to SETI Institute and expects more detailed data on the occultation in a month's time

Kuossari's observation »

Lunar halos preceeded the rain

20.10. Last night a wide warm front with its rains approached Finland from west and the high cloud sheet which advanced it showed halos all the way from Lappeenranta to Salla. Here is a stack of the display taken by Petri Martikainen in Juva at 21.06-21.16. In the upper left corner of the picture is short-lived 120° parhelion, which Martikainen also noticed visually. If the 120° parhelion has been cut off from the news image, see Martikainen's observation .

Oct. 19/20 night halos »

Supernova remnant Abell 85

20.10. Erik Pirtala got ready the less frequently photographed object Abell 85, which is a supernova remnant in the constellation of Cassiopeia. "The project, which started right in the very first days of the month, came to an end last night when even Eastern Finland got a glimpse of clears skies," says Pirtala. The total exposure was 17 hours. Abell 85, also known as CTB1, is located 9,800 light-years away from us and its size in the sky is that of a full moon.

Abell 85 In the sky »

Lucy probe in Hankasalmi Observatory image

18.10. Nasa launced on Saturday, Oct. 16, Lucy mission on its long journey to explore Jupiter Trojan asteroids. Arto Oksanen captured the probe next day with the Hankasalmi Observatory's 40 cm telescope. Lucy was 600,000 km from us at the time of the photo. The spacecraft will initially remain close to Earth's orbit and will pick up momentum from three near-Earth bypasses during its flight.

Oksanen's observation »

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Newest commented observations

Several halo forms

Several halo forms

24.10.2021 at 11.20 - 14.30 - Rovaniemi (III)
Olli Sälevä

Congratulations on both sides at noon. Ounasvaara's snow cannon dust was also included in the pictures taken by the water, but there was no such screen available this time.

Images: 7 pcs • Comments: 1 pcs

Observation information »

M57

23.10.2021 at 19.30 - Paimio
Eeva-Kaisa Ahlamo, Turun Ursa

A small star jumping video for the M57. (In the second video, pictures without patterns.) In the era of GoTo telescopes, wanhaa decent star jumping is rarely practiced a little unnecessarily. That’s why I tried what that would look like in video format. I added the fixed points and patterns of my own route. The tire mist was the first item I found on my own first tube at the age of 12 by star jumping. It was behind the work and the pain when there was no idea what the route was supposed to look like through the pipe, and there was no real idea of the scale, but yes it was finally found then. A...

Images: 2 pcs • Comments: 1 pcs

Observation information »

One halo form

One halo form

23.10.2021 at 11.00 - Raahe (III)
Jarkko Alatalo, Ursa (Pohjois-Suomi)

Morning halo.

Comments: 1 pcs

Observation information »

Several halo forms

Several halo forms

22.10.2021 at 10.47 - Turku (III)
Paula Mattila

The surprising thinning of the cloud curtain in the middle of a rainy morning, 22r stood out dimly but when the color of 22ys was also momentarily visible, it was a sure observation from the halos.

Comments: 2 pcs

Observation information »

Several halo forms

Several halo forms

19.10.2021 at 23.20 - 23.35 - Taipalsaari (III)
Terhi Törmälä

22 degree perimeter to hear and I do not know I just imagine, but is also the inner perimeter? I'll leave it to the Savior to decide if. Photo taken at 11:32 p.m. Edit. Another image added. This was taken a little earlier than that first put picture. 23.20

Images: 2 pcs • Comments: 9 pcs

Observation information »

980 Anacostia

19.10.2021 at 01.48 - 01.56 - Janakkala, Tervakoski (II)
Petri Kuossari, Riihimäen tähtit. yhdistys

On Monday night, I photographed the Asteroid 980 Anacostia overpass to the Seti Institute, would look like positive observations. This finding led to more detailed research at the Seti Institute as a researcher by Joe Asencio. In a month, I will probably get more accurate data on the overrun.

Images: 3 pcs • Comments: 11 pcs

Observation information »

Neptune

Neptune

18.10.2021 at 22.20 - 22.26 - Nousiainen (II)
Lasse Ekblom

Neptune and Uranus photographed sequentially with the same settings. Color and relative sizes noticeable, little else.

Comments: 2 pcs

Observation information »

Rare halos

Rare halos

19.10.2021 at 20.50 - 23.50 - Juva (III)
Petri Martikainen, Ursa (Itä-Suomi)

A nice haloshow in the light of the moon struck strangely after a long relentless season. I put the camera to capture the stack as soon as I got home from things. Zykki and 120 ° saur also shone brightly in the sky for a while, but the latter in particular faded away really quickly. Fortunately, it had barely fit in the camera's field of view. After that, I went to another camera to take pictures of the whole sky, but the best moment had already passed. Even the northern lights seemed to stick to the full sky. The main image is a gif animation from 9:32 pm to 10:02 pm, images of unprocesse...

Images: 8 pcs • Comments: 4 pcs

Observation information »

Abell 85 / CTB1

Abell 85 / CTB1

19.10.2021 at 19.15 - 20.30 - Kangaslampi (I)
Erik Pirtala, Warkauden Kassiopeia

Lokakuu on ollut varsin surkea havaintokelien osalta. Kuun ihan ensimmäisinä päivinä aloitettu projekti tuli maaliin viime yönä, kun Itä-Suomeenkiin saatiin parin tunnin kirkas pätkä. Kuvasin tämän kohteen 17,2 -tuntisena projektina . Sumu on kapeakaistassa HOO -paletissa, ja tähän on löyty RGB -tähdet päälle. Todella himmeä ja haastava kohde. Tässä meni aikansa että löysi edes sinne päin toimivan määrän ja maskauksen kohinanpoistolle. Herkästi näissä himmeissä siloittelee liikaa ja tekee lopputuloksesta liian muovisen. H-alfa: 9hO-III: 7,2hRGB:20min per kanava = 1h Suurempi kuva ja tekniset t...

Comments: 1 pcs

Observation information »

Iridium 29

Iridium 29

19.10.2021 at 21.21 - Siilinjärvi (III)

I bongas on a very short-lived (about a second, about roughly) yet very bright satellite reflection repo shooting trip. Based on the Heavensat study, the most likely candidate to cause reflection is Iridium 29 ( #24944).

Images: 2 pcs • Comments: 2 pcs

Observation information »

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