Die Suche ergab 371 Treffer

von Timo Kuhmonen
23. Jan 2019, 16:11
Forum: Allgemeines Forum
Thema: [HALO] Surface subparhelia, Taivaanvahti (22.1.2019)
Antworten: 0
Zugriffe: 206

[HALO] Surface subparhelia, Taivaanvahti (22.1.2019)

fyi, I'll post a link if someone is interested.... Documented as surface subparhelia (on water ice cover). Observation by Pekka L. (Helsinki, Finland) https://www.taivaanvahti.fi/observations/show/80683 PS: Although I have seen many times the frozen lake surfaces, this halo type I haven' t seen yet....
von Timo Kuhmonen
22. Jan 2019, 20:31
Forum: Polarlicht Forum
Thema: Polarlichtarchive verschiedener Länder und Regionen
Antworten: 4
Zugriffe: 1514

Re: Polarlichtarchive verschiedener Länder und Regionen

Liebe Mitglieder, ich suche für meine Doktorarbeit an der Universität Jena nach Polarlicht Sichtungen der letzten Jahrzehnte und benötige eine möglichst gute globale Abdeckung. Daher bin ich auf der Suche nach Archiven für verschiedene Länder. Insbesondere wäre Nordamerika interessante, aber auch A...
von Timo Kuhmonen
22. Jan 2019, 19:28
Forum: Allgemeines Forum
Thema: [Halo] Rare surface halos, Taivaanvahti (3.1.2019)
Antworten: 2
Zugriffe: 506

Re: Rare surface halos, Taivaanvahti (3.1.2019)

Another observation from 3.1.2019, by Tero Sipinen (Kouvola, Finland)
https://www.taivaanvahti.fi/observations/show/80125
von Timo Kuhmonen
22. Jan 2019, 18:51
Forum: Allgemeines Forum
Thema: [Halo] Artificial light halos, Taivaanvahti (2019)
Antworten: 4
Zugriffe: 1145

Re: Artificial light halos, Taivaanvahti (2019)

Another set of light pillars, observation by Mikko Peussa at 22.1.2019 (Turku, Finland)
https://www.taivaanvahti.fi/observations/show/80670
von Timo Kuhmonen
20. Jan 2019, 17:46
Forum: Polarlicht Forum
Thema: Totale Mondfinsternis über Deutschland 20.1.2019/21.1.2019
Antworten: 43
Zugriffe: 7858

Re: Totale Mondfinsternis über Deutschland 20.1.2019/21.1.2019

I try to follow also this event, in central Finland, if conditions are ok. Current estimate is partially cloudy sky and temperature around -23...-25C.
von Timo Kuhmonen
4. Jan 2019, 21:17
Forum: Allgemeines Forum
Thema: [Halo] Rare surface halos, Taivaanvahti (3.1.2019)
Antworten: 2
Zugriffe: 506

[Halo] 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: [Halo] Artificial light halos, Taivaanvahti (2019)
Antworten: 4
Zugriffe: 1145

[Halo] Artificial light halos, Taivaanvahti (2019)

Observation by Pasi Hannula (Kuopio, Finland) -> 3.1.2019. 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: 10
Zugriffe: 1389

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: 10
Zugriffe: 1389

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: 1275

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: 292

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: 1228

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: 1228

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: 1228

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: 1531

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: 1228

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: 488

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 (2018, 2019 etc)
Antworten: 2
Zugriffe: 656

KH-clouds, Taivaanvahti (2018, 2019 etc)

Photos and observation by Jouni Hovi. Photos taken on plane, above Norrköping / Sweden...
https://www.taivaanvahti.fi/observations/show/79157