Contact information

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

Ursa Astronomical Association

2 observations and 0 comments in queue.

Kuluneen 1 kk ajalta ne havainnot, joissa on sekä kuva että havaintokertomus.

Moon

2.6.2023 at 00.05 - 00.25 - Helsinki (III)
Pekka Saastamoinen, Ursa (Helsinki)

It was a cloudless early night. I found a 40-year-old 2x TC, so I had to make a fuss. 2xTC + 1.4xTC + 300mm f4, i.e. 840mm f11. ISO800, 1/200s. A stack of 20 squares. PiPP, AutoStakkert, Astrosurface, Ps

Sun

1.6.2023 at 17.00 - Nummenmäki, Turku (III)
Petrus Kurppa, Turun Ursa

June started as you might have guessed, with cold and cloudy conditions. In the afternoon, the sun showed up a little better, so I photographed for a while on little Lunt. Very strange activity did not occur at this time, which is why there is not much joy in the animation. About 50 minutes of videos.

Images: 2 pcs

Primary rainbow

2.6.2023 at 08.56 - Lohja (III)
Paula Mattila

While waiting for the Turku bus, I amused myself by watching to see if a rainbow would come, and it did, and so did the bus on time.

Image of an exceptional thunder cloud

1.6.2023 at 20.50 - Tampere (III)
Tapio Lahtinen, Tampereen Ursa

Somewhere in the direction of Lempäälä, a fading anvil cloud. I didn't dare to touch the mammuts.

Images: 2 pcs

Negative observation of missing night shining clouds

1.6.2023 at 23.52 - 01.14 - Helsinki
Pentti Arpalahti

The sky was otherwise clear, but below ten degrees there were clouds from the northwest to the northeast, which at a distance could be mistaken for narrow bands of night clouds near the horizon. When the gray lines were closer, the contrast illusion does not work. The contrasts of the images have been emphasized with Lightroom.

Images: 5 pcs

Pollen corona

1.6.2023 at 20.28 - 20.47 - Helsinki (III)
Pentti Arpalahti

Searching for a covert when photographing a pollen ring.

Images: 3 pcs

Moon

1.6.2023 at 21.50 - Vantaa, Pa?hkina?rinne
Paula Wirtanen, Ursa (Helsinki)

The moon happened to peek through the living room window between the oak branches. Hello, June Moon!

Images: 2 pcs

Hail in the summer season

1.6.2023 at 16.36 - A?hta?ri, A?hta?ri Zoo (IV)
Marko Myllyniemi, Lakeuden Ursa

My wife and I were on a tour in Ähtäri Animal Park, when a hailstorm surprised us at the end of the route - and even more so at the snow leopard... ;-D The hailstorm lasted for maybe 7-10 minutes, and in some places the ground was white with hail. The size of the largest grain I suddenly noticed was about five millimeters. The hailstones were pretty much snowflakes, there is no exact information about the temperature at the observation location at the time of observation, but a guess around +2°C- +3°C (around 4 pm when we left, the car gauge showed +3°C). A good couple of hours earlier (i.e. a...

Images: 7 pcs

Hail in the summer season

1.6.2023 at 13.17 - Saarijärvi (I)
Maritta Kinnunen

During this day, there have been so many hailstorms that I can't remember anything like it. It was also raining. The wind has been stormy at times. For a moment the sun appeared. Fast weather changes. Before these cloud pictures, there was a really strong wind, the air was cloudy and it was raining hail. However, there was no thunder. I didn't understand going to take pictures. The weather didn't appeal :D I finally realized that if there was something to film. However, I don't know if there's anything wrong with these. Later I took pictures of the hail and the hailstones. ...

Images: 6 pcs

One halo form

1.6.2023 at 20.51 - Turku (I)
Mirko Lahtinen, Ursa (Länsi-Suomi)

The side sun of the first evening of June.

Primary rainbow

23.5.2023 at 21.53 - 21.29 - Kuopio (II)

Main rainbow. Part of it. In the fourth picture, it is still faintly visible on the right side. Rainbow head with litter box; one person's trash is another's treasure. :D

Images: 4 pcs

Pollen corona

31.5.2023 at 21.40 - Lohja (III)
Paula Mattila

The Sp-ring was not the same as the day before, but it was visible in the evening sky in front of the clouds nicely.

Hail in the summer season

1.6.2023 at 18.57 - Kuopio (IV)

The first day of June and snow in the house. Hail and snow showers marked this day. At the time of shooting + 3 c and the highest temperature of the day only + 8 c. Not when wearing a fur cap and heading towards Midsummer. :D

Images: 4 pcs • Comments: 1 pcs

Several halo forms

1.6.2023 at 15.04 - Saarijärvi (II)
Maritta Kinnunen

For a short while, the tire was visible. Quite a surprise for today. The weather is cold and changeable. It's raining hail every now and then. It also rained and the wind was stormy at times.

Other storm phenomenon

1.6.2023 at 14.30 - Tampere (IV)
Ville-Aleksi Alatalo

After a heavy rain of hail and sleet, I saw mammatus clouds or udder clouds on the horizon.

Sun

1.6.2023 at 11.20 - Tampere (III)
Tapio Lahtinen, Tampereen Ursa

The weather forecast didn't promise much, but when unexpectedly a moderate-sized opening in the blue sky appeared in the sky, it had to be used urgently. I got a few short stacks from both the departing dot group and the upcoming and obviously promising one (called AR3323).

Images: 2 pcs

Pollen corona

1.6.2023 at 11.15 - Kangasala (II)
Jukka Oravasaari

Pollen ring as the first observation of June

Sun

31.5.2023 at 11.00 - Nummenmäki, Turku (II)
Petrus Kurppa, Turun Ursa

The owner of the weather was quite fussy about good sunny weather, so I took what was available. Seeing was really bad, when the granulation that was previously well visible was now really on the cards. I somehow got to see it in one picture. There are now plenty of active areas in the area of the sun's disc, and new ones are already emerging from behind the edge. Full disc with 80mm lens tube, close-ups with 152mm telescope tube. Really small stacks were a way to get data out despite the weather, most of the close-up photos are stacks of only 15 photos. Too many days have passed with appa...

Images: 7 pcs

(21526) Mirano

20.5.2023 at 00.46 - 00.57 - Orimattila, Artjärvi, Tähtikallio (III)
Kari Laihia, Christos Oscar Kambiselis, Toni Veikkolainen, Veikko Mäkelä, Porin Karhunvartijat

(21526) Mirano (1998 MS24,1997 CB30) A central main belt asteroid imaged on the first evening of the 2023 May talcos. While photographing the asteroid (130) Elektra, this came in the same pictures. The asteroid was discovered by the Farra d'Isonzo observatory (595 – Farra d'Isonzo) on June 30, 1998. The Farra d'Isonzo observatory has discovered a total of 595 asteroids. Source CCAF https://www.ccaf.it/asteroidi-numerati/ . The asteroid got its name from the Italian amateur astronomer Mirano Silvestri. Source and quote Minor planet center: Mirano Silvestri (b. 1924) is an amateur as...

Images: 3 pcs

Negative observation of missing night shining clouds

1.6.2023 at 01.31 - 01.54 - Helsinki
Pentti Arpalahti

For Nega, the conditions were avoidable. The gust of about twenty minutes is short, and the cloudy sky below 10 degrees prevents the detection of weak cloud fibers. At least there wasn't anything bigger. The images have been processed and warmed with a setting of 8 kK.

Images: 5 pcs

Search result contains observations from time period 2.5.2023 klo 15.08 - 02.06.2023 klo 15.08.