Die Suche ergab 284 Treffer

von Timo Kuhmonen
4. Jan 2019, 21:17
Forum: Allgemeines Forum
Thema: Rare surface halos, Taivaanvahti (3.1.2019)
Antworten: 1
Zugriffe: 182

Rare surface halos, Taivaanvahti (3.1.2019)

fyi, Set of surface halos, the rare type visible here. It is two diffuse lines on both side of sun. I do not know the correct name of halo in english, in finnish it is referred as "Pinta-aurinkokaaret [Luomanen]" or "Luomasen kaaret". More info (in finnish) and simulation images, can be found by cli...
von Timo Kuhmonen
4. Jan 2019, 20:53
Forum: Allgemeines Forum
Thema: Artificial light halos, Taivaanvahti (3.1.2019)
Antworten: 0
Zugriffe: 107

Artificial light halos, Taivaanvahti (3.1.2019)

Observation by Pasi Hannula (Kuopio, Finland). It looks like street map on sky :-)
https://www.taivaanvahti.fi/observations/show/80073
von Timo Kuhmonen
4. Jan 2019, 20:36
Forum: Meteor Forum
Thema: Software zur Auswertung von Überwachungskamerastreams
Antworten: 4
Zugriffe: 385

Re: Software zur Auswertung von Überwachungskamerastreams

I use UFO capture v2 on my two meteor cameras.... other comments from UFO capture, before considering purchase video settings... PAL/NTSC settings in my setup (UFO capture v2) cannot stay in user defined values. Basicly I select suitable 720*576 resolution and PAL_B mode. After PC is booted, UFO ca...
von Timo Kuhmonen
3. Jan 2019, 14:36
Forum: Meteor Forum
Thema: Software zur Auswertung von Überwachungskamerastreams
Antworten: 4
Zugriffe: 385

Re: Software zur Auswertung von Überwachungskamerastreams

I use UFO capture v2 on my two meteor cameras (Watec 910HX), both running on same PC. I have selected a "path" of multiple lower resolution cameras, instead of high res & fisheye lens combination. To my understanding, Sonotaco does not anymore update UFO Capture v2 (although these was an option to b...
von Timo Kuhmonen
27. Dez 2018, 10:41
Forum: Off-Topic Forum
Thema: Weitwinkel Objektiv für Nikon DX ?
Antworten: 9
Zugriffe: 410

Re: Weitwinkel Objektiv für Nikon DX ?

I still have a Tokina 12-24/f4. Used it mainly with old Nikon ... I do not like that lens. Even if the lens is correctly focused, the corners look quite a bad and blurred (also at f8 or f11). I guess there could be optical or mechanical problem in my lens. Have not heard that all the Tokina 12-24/f4...
von Timo Kuhmonen
27. Dez 2018, 10:31
Forum: Allgemeines Forum
Thema: Glory at Taivaanvahti (26.12.2018)
Antworten: 1
Zugriffe: 151

Glory at Taivaanvahti (26.12.2018)

Observation by Heikki Hautala (Nivala, Finland)
https://www.taivaanvahti.fi/observations/show/79898

Any ideas why the rings are not round, most clearly this is visible at first and second images ?
von Timo Kuhmonen
22. Dez 2018, 21:16
Forum: Allgemeines Forum
Thema: Rare & new halo types at Taivaanvahti (Sweden, 14.12.2018)
Antworten: 10
Zugriffe: 726

Re: Rare & new halo types at Taivaanvahti (Sweden, 14.12.2018)

fyi,

one photo at Borlänge from opposite side of sun, by Natalie Åkerstöm.
https://www.taivaanvahti.fi/observations/show/79795
von Timo Kuhmonen
17. Dez 2018, 22:21
Forum: Allgemeines Forum
Thema: Rare & new halo types at Taivaanvahti (Sweden, 14.12.2018)
Antworten: 10
Zugriffe: 726

Re: Rare & new halo types at Taivaanvahti (Sweden, 14.12.2018)

I am not sure about that image, from google (it looks like a stitched panorama, so precise analysis based on panorama may not be accurate). At least these seem to be additional images at SVT web site: https://www.svt.se/nyheter/lokalt/dalarna/se-ljusfenomenet-i-borlange also on YouTube: https://www....
von Timo Kuhmonen
16. Dez 2018, 20:03
Forum: Allgemeines Forum
Thema: Rare & new halo types at Taivaanvahti (Sweden, 14.12.2018)
Antworten: 10
Zugriffe: 726

Re: Rare & new halo types at Taivaanvahti (Sweden, 14.12.2018)

I also noticed the "Heja Sverige" comment :) It is also worth to mention, that in the unsharp masked image, there is a second arc visible on top of CZA.
von Timo Kuhmonen
14. Dez 2018, 18:55
Forum: Polarlicht Forum
Thema: PL Sichtbarkeit Region Helsinki
Antworten: 5
Zugriffe: 913

Re: PL Sichtbarkeit Region Helsinki

Interested to hear, did you see any auroras...?
von Timo Kuhmonen
14. Dez 2018, 18:49
Forum: Allgemeines Forum
Thema: Rare & new halo types at Taivaanvahti (Sweden, 14.12.2018)
Antworten: 10
Zugriffe: 726

Rare & new halo types at Taivaanvahti (Sweden, 14.12.2018)

Found this observation from Taivaanvahti. Images by Magnus Edbäck (Borlänge, Sweden). Formed in the multiple scattering. For description, look the first comment by Marko Pekkola...
https://www.taivaanvahti.fi/observations/show/79745

Also on Les Cowleys site...
http://www.atoptics.co.uk/fza164.htm
von Timo Kuhmonen
30. Nov 2018, 19:01
Forum: Allgemeines Forum
Thema: Rare halos display (Taivaanvahti, 27.11.2018)
Antworten: 2
Zugriffe: 291

Rare halos display (Taivaanvahti, 27.11.2018)

Very sharply defined set of rare halos :wow: Photos and observation by Johanna Kuustonen.
https://www.taivaanvahti.fi/observations/show/79581
von Timo Kuhmonen
13. Nov 2018, 16:09
Forum: Allgemeines Forum
Thema: KH-clouds, Taivaanvahti (5.11.2018)
Antworten: 0
Zugriffe: 250

KH-clouds, Taivaanvahti (5.11.2018)

Photos and observation by Jouni Hovi. Photos taken on plane, above Norrköping / Sweden...
https://www.taivaanvahti.fi/observations/show/79157
von Timo Kuhmonen
5. Nov 2018, 17:34
Forum: Polarlicht Forum
Thema: PL Sichtbarkeit Region Helsinki
Antworten: 5
Zugriffe: 913

Re: PL Sichtbarkeit Region Helsinki

I add here one useful link. It picks up all the observations of auroras in Taivaanvahti database (beginning from 1.7.2017, currently 1216 entries). You can zoom the map to Helsinki (or any other region) to get sample photos. This is better local estimate, used together with light pollution maps... h...
von Timo Kuhmonen
4. Nov 2018, 21:26
Forum: Polarlicht Forum
Thema: PL Sichtbarkeit Region Helsinki
Antworten: 5
Zugriffe: 913

Re: PL Sichtbarkeit Region Helsinki

One location (approx 7km from Helsinki) is this - Malminkartano hill. There is good visibility to many directions of far horizon. But the light pollution is still there. If you are getting cold, there is lot of steps to walk up and down :-) There is also a parking place near the hill, last steps you...
von Timo Kuhmonen
31. Okt 2018, 21:20
Forum: Allgemeines Forum
Thema: Kelvin-Helmholtz display (Taivaanvahti, 29.10.2018)
Antworten: 2
Zugriffe: 219

Kelvin-Helmholtz display (Taivaanvahti, 29.10.2018)

There is set of KH clouds observed, and some nice photos also :-) This one was visible in south-west Finland at 29.10. https://www.taivaanvahti.fi/observations/show/78982 https://www.taivaanvahti.fi/observations/show/78974 https://www.taivaanvahti.fi/observations/show/78967 https://www.taivaanvahti....
von Timo Kuhmonen
10. Okt 2018, 19:48
Forum: Polarlicht Forum
Thema: 2018-10-10/11: Polarlichtsichtungen
Antworten: 7
Zugriffe: 1030

Re: 2018-10-10/11: Polarlichtwarnung

In central Finland, I was outside looking at sky a while ago. In northern parts of sky, some forms of green & red auroras were rising to approx 50...70 degrees of height. Just need to take a hot tea with bread, to get some energy for remaining night (+3C outside now). Also heard some swans (approx 5...
von Timo Kuhmonen
8. Okt 2018, 21:08
Forum: Polarlicht Forum
Thema: Re: Polarlicht 7/8.10.2018
Antworten: 40
Zugriffe: 5361

Re: Re: Polarlicht 7/8.10.2018

Last night 7/8.Oct at central Finland, was looking pretty nice visually :-) Unfortunately I do not have images of aurora, since my Nikon D200 took last photos couple of days ago (shutter failure) :x There was auroras pretty widely on sky, beginning from low northern sky, all the way to zenith and ex...
von Timo Kuhmonen
23. Sep 2018, 19:19
Forum: Allgemeines Forum
Thema: Canditate for 3rd order bow (4.8.2018, Vesanto/Finland)
Antworten: 2
Zugriffe: 833

Canditate for 3rd order bow (4.8.2018, Vesanto/Finland)

Here is my first attempt to capture... I took these images some time ago, now are finally processed. The lens I used was Tokina 12-24/f4 (Nikon D200), at 12mm focal length. Images are not cropped, sun is behind & in the middle of flagpole at bottom right corner. https://timokuhmonen.smugmug.com/Natu...
von Timo Kuhmonen
22. Sep 2018, 20:59
Forum: Allgemeines Forum
Thema: Moonbow / Aurora, Taivaanvahti (22.9.2018)
Antworten: 1
Zugriffe: 629

Re: Moonbow / Aurora, Taivaanvahti (22.9.2018)

another moonbow (20.9.2018), also from Jani Päiväniemi.
https://www.taivaanvahti.fi/observations/show/77765