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

Ursa Astronomical Association

2 observations and 0 comments in queue.

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

Several halo forms

24.11.2022 at 10.00 - Joensuu (II)
Marko Riikonen

On the singing stage, cannons on and light ice fog. Yes, it was less common, but I interpreted it to mean that you liked that bosta. Unusually windy weather. It would have been a decent ice fog if it was calmer. - - - - - Update: I made a 60 km trip to Tuupovaara and there was noise all the way except for one short section. The ice fog seen on the singing stage was the same and the cannons had no part in it. This interpretation was confirmed when, on the way to Tuupovaara, we encountered real cannon ice fog. First I noticed a typical gray flat mass in front as shown in picture 3. In picture fo...

Images: 5 pcs

Pintahalo

20.11.2022 at 14.13 - 14.18 - Joensuu (II)
Marko Riikonen

The surface solar arc surprised by freezing in the shelters of the marina. The angle of the phenomenon is quite narrow, you wouldn't need to be much higher than the sun to reach out to become a Bottlinger. The moon phase is too weak to attempt it at night. I was equipped with my phone, I clicked pictures and quickly stacked 16 of them by hand. The first is the maximum stack, the second is the average stack. Thirdly, a single image which is, as it should be, significantly worse than the visual impression. Keli was perhaps not quite an archetype. In the morning there was a moderate wind acco...

Images: 3 pcs • Comments: 2 pcs

One halo form

30.5.2022 at 10.50 - Joensuu (I)
Marko Riikonen

22 ° upside down again. Admittedly, this could also be 23 ° p, but there is no time on the stacks.

One halo form

29.5.2022 at 14.16 - Joensuu (I)
Marko Riikonen

And the tube of curves flanking 22 ° just goes on. In the evening, in the cirrus of deaf clouds, side sun, zyk, 22 rings.

Several halo forms

28.5.2022 at 10.21 - Joensuu (II)
Marko Riikonen

Promising looking 22 above the sky, but I didn’t have time to stack. It started to fade, too. 28.5. is the only day in May for the period beginning with the Sky Guard, in which no halo observation has been made in the rari in any year.

One halo form

27.5.2022 at 12.50 - Joensuu (I)
Marko Riikonen

Very weak 22 ° top.

One halo form

26.5.2022 at 10.41 - Joensuu (I)
Marko Riikonen

In a thick cloud 22 ° ring.

Several bright halo forms

25.5.2022 at 18.22 - 18.34 - Joensuu (III)
Marko Riikonen, Petri Martikainen

Stack comparison Nikon D7000 vs. Canon 80D as Martikainen and Riikonen cameras, respectively. At the time of observation 136 images, every 5 s (one simultaneous slightly longer pause was in between). The same size, aperture, shutter speed in the cameras. In Photoshop, the color heat and ink are put together before the tif conversion and subsequent stacking with a full reset with Halostack. Then a larger image of the 80D is the same size as the D7000 and the following adjustments are made identically (80D on the left): 1. 2 x usm (radius 25, 25) 2. 3 x usm (radius 25, 25, 12.5) 3. br + bgr 4. b...

Images: 8 pcs • Comments: 6 pcs

Rare halos

25.5.2022 at 07.40 - Joensuu (IV)
Marko Riikonen

Day 25 was an exceptionally continuous high cloud from morning until sunset. Here are a couple of stacks. Pyraa apparently had been in the morning, the 18 and 23 ° slips appearing in the stack of the first image taken at 0740-0809. 46 frames, 30s exposures through ND filter. I hadn’t remembered to seem to wipe the debris off the lens at that point. Second stack later before noon, there are 52 squares in there. The 46 ° basin was visible to the naked eye. The observation will be continued as long as there is time to process the images, in which the 46 ° ring and the 46 ° top side are better vis...

Images: 3 pcs

Rare halos

22.5.2022 at 19.55 - 19.59 - Joensuu (IV)
Marko Riikonen

I got a series of pictures from the reflection sun. 1. A stack of 36 images of the best stage during 1m 43s at 19:56:35-19:58:18. Little usm given. 2. Single organic image 3. A video with a whole series of 71 shots during 3m 27s at 19:55:37 - 19:59:04. Framerate 20 / s. Squares slightly hazy. (Video quality suffered from the transfer to the Watch pretty much). But is that a haa? There are equally sharp reflected cloud rays in the stack (only the cloud rays move faster and blur away). Although the potential hook dominates the view. Whether it is. If not, let the observation be moved to the cate...

Images: 3 pcs • Comments: 3 pcs

One halo form

20.5.2022 at 22.28 - Joensuu (I)
Marko Riikonen

The pillar appeared in the upper cloud fiber after sunset. I shot lazily on my cell phone at first, but it saturates the snippet and when I moved on to the stage, the best glory was already over in this 2228 picture.

One halo form

18.5.2022 at 10.52 - Joensuu (I)
Marko Riikonen

A cloud of clouds begins to appear in the sky. 22 ° ring

Several halo forms

17.5.2022 at 13.57 - Joensuu (II)
Marko Riikonen

The plumes cracked, the halos visible as a little water ripped.

Several halo forms

16.5.2022 at 10.47 - Joensuu (II)
Marko Riikonen

The side sun also seemed to materialize in the picture.

Several halo forms

15.5.2022 at 19.37 - Jyväskylä (II)
Marko Riikonen

22 ° ring from the train in Jyväskylä. A little later also a side sun that is not pictured.

Reflected sunbeams

23.9.2021 at 08.33 - 08.46 - Kontiolahti (II)
Marko Riikonen

Spots of cloud rays reflected in the morning on the lower surface of the cloud when there was a suitable clear gap below. I took a series of pictures just in case the haa appeared. But often they snuggle up to appear without hps. Apparently I also became warm by making images of the ground that is at the time of observation at 5s intervals.

Images: 2 pcs

Moonn kehä

21.9.2021 at 20.58 - 01.10 - Kontiolahti (II)
Marko Riikonen

The elliptical camera watched the moon again at the time of the observation. Now there was more potential than the night before, as most of the time the moon was behind the edge of Ac. But then it just evaporated away without turning into crystals. I stacked a 15x30s perimeter. 7 minutes into the game, a swerving effort from the right that the visitors' keeper did well to tip wide.

Moonn kehä

20.9.2021 at 23.41 - 01.30 - Kontiolahti (IV)
Marko Riikonen

Yesterday, I stabbed the elliptical guard to hit the moon for a few hours. Here is a snippet after the last camera orientation. The cloud situation was not the most optimal in terms of ellipses, but not completely impossible. The perimeter appeared on two occasions, I happened to be outside myself then. The first was a large and bright perimeter in some middle cloud, i.e. at this point there was therefore potency in the ellipse. The other was in an invisible flat cloud, something foggy. Otherwise, the cloud is an upper cloud with a 22 ° ring visible outside the image. Yes, based on this perime...

Images: 2 pcs

Several halo forms

10.9.2021 at 18.30 - Joensuu (II)
Marko Riikonen

Yesterday I was stacking halos of the approaching warm front. Nothing came from something weird, like the last picture, a stack of 297 pictures every 7s shows. The list also includes halos that do not appear in this image. I did this Watch report only because I came to switch from 16mm to 4.5mm while the play was showing, where the ND filter in the latter allowed 30s exposure, and these relatively close-up images allowed for comparison. Of course, they are not directly comparable when there are different lenses and even a moment in the play is not exactly the same. But you can get some clues. ...

Images: 3 pcs

Rare halos

7.9.2021 at 08.32 - 09.36 - Joensuu (IV)
Marko Riikonen

I filmed this play through a particularly dark Kodak Wrate gelatin ND filter I slid into the bottom of a 4.5 milligram Sigma. I got 30s shutter speeds with aperture f13. I was most pleased to be able to see the lower solar arc in the mirror (I pierced Martikainen with an enthusiastic message about this in the hectic nature of the situation), but the joy was reduced afterwards by the statement that I didn't notice the Wegener next door. At its best, the 46 ° overhang was really impressive in its color and intensity. This play would have certainly slipped past my eyes unless I had woken up b...

Images: 5 pcs • Comments: 4 pcs

Search result contains observations from time period 1.1.2000 klo 00.00 - 5.12.2022 klo 10.08.