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von Timo Kuhmonen
14. Sep 2020, 18:26
Forum: Halos und atmosphärische Erscheinungen
Thema: Multiple order bows / Finland
Antworten: 22
Zugriffe: 3909

Re: Multiple order bows / Finland

Juva / Finland, 11.9.2020 -> 3rd and 4th order bows. Scroll down the page to see image...
https://www.taivaanvahti.fi/observations/show/93585
von Timo Kuhmonen
10. Sep 2020, 19:21
Forum: Meteore
Thema: Long duration fireball (Finland, 7.9.2020)
Antworten: 12
Zugriffe: 636

Re: Long duration fireball (Finland, 7.9.2020)

timestamp that is visible on Taivaanvahti observation title (together with date), that is current local time. Now it is UTC+3h (summertime). If there is timelabel on images, on most cases it is UTC time (not 100% still). This case was seen at 20:03 UTC.
von Timo Kuhmonen
10. Sep 2020, 14:47
Forum: Off-Topic
Thema: Ultrasonic soundscape under nightsky
Antworten: 1
Zugriffe: 384

Ultrasonic soundscape under nightsky

just wondering, has anyone observed this ? I have not visited yet in Germany, I assume you still have more distant areas, that have less human created noises ? here is two samples of flying mammals sounds :-) http://timokuhmonen.kuvat.fi/audio/spectrograms/2020-08-20_zoom-H5_audio0002_spectrogram001...
von Timo Kuhmonen
10. Sep 2020, 14:26
Forum: Halos und atmosphärische Erscheinungen
Thema: Multiple order bows / Finland
Antworten: 22
Zugriffe: 3909

Re: Multiple order bows / Finland

Lieto / Finland at 6.9.2020 (both 3rd and 4th order bows) https://www.taivaanvahti.fi/observations/show/93429 Elmar, if referring third image in this observation, how did you see traces of possible (?) 5th order... I tried to increase heavily saturation and also put strong USM sharpening at GIMP. (...
von Timo Kuhmonen
10. Sep 2020, 14:11
Forum: Meteore
Thema: Long duration fireball (Finland, 7.9.2020)
Antworten: 12
Zugriffe: 636

Re: Long duration fireball (Finland, 7.9.2020)

Okay...some crude calculations from the limited image data available: hello, Did you make the analysis, with common known equations, or do you have a specific software or tools ? I know there is already more precise analysis done here in Finland. That data is currently available to only members of ...
von Timo Kuhmonen
9. Sep 2020, 11:52
Forum: Meteore
Thema: Long duration fireball (Finland, 7.9.2020)
Antworten: 12
Zugriffe: 636

Long duration fireball (Finland, 7.9.2020)

Observation from 7.9.2020, fireball duration 20+ seconds... https://www.taivaanvahti.fi/observations/show/93504 https://www.taivaanvahti.fi/observations/show/93529 https://www.taivaanvahti.fi/observations/show/93517 All observations from same event here... https://www.taivaanvahti.fi/observations/br...
von Timo Kuhmonen
9. Sep 2020, 11:42
Forum: Halos und atmosphärische Erscheinungen
Thema: Reflection bow (various years, Taivaanvahti)
Antworten: 24
Zugriffe: 3094

Re: Reflection bow (various years, Taivaanvahti)

Elmar Schmidt hat geschrieben:
9. Sep 2020, 06:34
The third image seems to show a trace of the 5th order, too.

Elmar
link to observation...?
von Timo Kuhmonen
8. Sep 2020, 20:00
Forum: Halos und atmosphärische Erscheinungen
Thema: Reflection bow (various years, Taivaanvahti)
Antworten: 24
Zugriffe: 3094

Re: Reflection bow (various years, Taivaanvahti)

Observation from Kurenpolvi, Finland (31.8.2020). There is only a small fragment visible (primary reflection bow) https://www.taivaanvahti.fi/observations/show/93277 fyi. I forgot to mention, that this observation has also weak secondary reflection bow (in addition to primary reflection bow). There...
von Timo Kuhmonen
8. Sep 2020, 19:52
Forum: Halos und atmosphärische Erscheinungen
Thema: Multiple order bows / Finland
Antworten: 22
Zugriffe: 3909

Re: Multiple order bows / Finland

Lieto / Finland at 6.9.2020 (both 3rd and 4th order bows)
https://www.taivaanvahti.fi/observations/show/93429
von Timo Kuhmonen
31. Aug 2020, 19:17
Forum: Polarlicht und Astronomie
Thema: (Sammelthread) Polarlicht-Vorwarnungen 2020
Antworten: 20
Zugriffe: 2907

Re: (Sammelthread) Polarlicht-Vorwarnungen 2020

fyi, Last night there was some magnetic activity. At least the SGO diagrams did show about 700nT changes. In central Finland, the sky was cloudy. No visual observations then... On hamradio band there would be possible to monitor aurora, like Swedish beacons (SK4MPI) of the radio reflections. I do no...
von Timo Kuhmonen
31. Aug 2020, 19:08
Forum: Halos und atmosphärische Erscheinungen
Thema: Reflection bow (various years, Taivaanvahti)
Antworten: 24
Zugriffe: 3094

Re: Reflection bow (various years, Taivaanvahti)

Observation from Kurenpolvi, Finland (31.8.2020). There is only a small fragment visible (primary reflection bow)
https://www.taivaanvahti.fi/observations/show/93277
von Timo Kuhmonen
19. Aug 2020, 21:11
Forum: Leuchtende Nachtwolken (NLC)
Thema: Aktuelle Situation an OSWIN & Co. NLC-Saison 2020
Antworten: 182
Zugriffe: 29301

Re: Aktuelle Situation an OSWIN & Co. NLC-Saison 2020

one canditate for NLC + Aurora photo (19.8.2020, Oulu, Finland). Above treeline on the left, thre is stucture looks like NLC ?
https://www.taivaanvahti.fi/observations/show/92982
von Timo Kuhmonen
19. Aug 2020, 13:34
Forum: Meteore
Thema: Perseiden 2020
Antworten: 20
Zugriffe: 2072

Re: Perseiden 2020

I did not get Perseids observed by best way, some cloud coverage prevented that during maximum time. One fireball I got couple of days after maximum. This was typically more bright than average. Bright spot on the left side (at wooden window frame) is the meteor light reflection from painted wood su...
von Timo Kuhmonen
19. Aug 2020, 13:29
Forum: Meteore
Thema: Meteor Explosion über China
Antworten: 1
Zugriffe: 275

Re: Meteor Explosion über China

..thanks for info. Estimates of the brightness are huge...
von Timo Kuhmonen
19. Aug 2020, 13:12
Forum: Polarlicht und Astronomie
Thema: (Sammelthread) Polarlicht-Vorwarnungen 2020
Antworten: 20
Zugriffe: 2907

Re: (Sammelthread) Polarlicht-Vorwarnungen 2020

fyi. Looks like the auroral imaging season has started in Finland. I've missed this one last night.... I can see approx 250...300nT changes on the SGO magnetogram scale last night at 23 UTC https://www.taivaanvahti.fi/observations/show/92981 If NLC and aurora present at the same time, might be still...