AKM e.V. Forum

To Elmar and other also -- I think the phenomena might be best visible here, on last attached images. Another display from Kuusamo, Finland (13.6.2019) -> reflected crepuscular / reflected anti crepuscular rays https://www.taivaanvahti.fi/observations/show/83573 In Taivaanvahti there is small info b...

FYI. Observation from Kangasala, Finland (23.6.2020)
https://www.taivaanvahti.fi/observations/show/91552

fyi. No NLC observations here on last night.... It started to rain already on yesterday, continuing until next night. Now there is approx 35mm layer of water in the rain meter.... and more will follow.

FYI; additional images from Raisio observation location (24.6.2020). To my opinion it looks very nice
https://www.taivaanvahti.fi/observations/show/91369

FYI. Observation from Raisio & Finland (23.6.2020), this phenomena mentioned to be related to Nautococcus -algae. Colors on the phenomena seem to be very strong...
https://www.taivaanvahti.fi/observations/show/91349

fyi, I'll inform on this new thread, because I did not found an older one of this topic? One interesting looking halo is observed (29.5.2020, Muonio-Finland) https://www.taivaanvahti.fi/observations/show/91336 It does not look like ordinary sunpillar. On the observation it is identified as reflectio...

fyi. Observation from Helsinki & Finland (21.6.2020)
https://www.taivaanvahti.fi/observations/show/91334

nice to see photos :-) You have had a good set of NLC there. To my understanding in Finland, the best season for the NLC's will be in July. So probably couple of weeks to wait for that ? Still nights are here not at all dark. For curiosity (central Finland) I tested my SQM-L meter. It shows 30 mins ...

link on Youtube...
https://www.youtube.com/watch?v=qWHSlFpsx6Q

this could be from same fireball (?)
https://fireball.imo.net/members/imo_vi ... /2020/2881

fyi, today long duration fireball was seen https://www.perthnow.com.au/technology/science/meteor-lights-up-pilbara-sky-in-vision-captured-by-fifo-worker-miller-frunks-ng-b881578491z I did not yet found many videos. This one was at Finnish website (Ilta Sanomat). Based on the video (Kane Marshall), d...

set 2/2 (out of focus images)

hello, here is a set of images of 22 ring halo. This time I only took 300mm lens with me :-) Good to take some out of focus images of the glowing crystals. These crystals appear in the surface of straws (at nearby field). Images were taken approx 06AM on local time. Crystals soon disappeared when te...

FYI. Oulu / Finland - at 8.6.2020
https://www.taivaanvahti.fi/observations/show/91169

Thanks for the info....
-Timo K.

FYI...

Kern arc at Reading, UK (21.5.2020). Observation by Reima E.
https://www.taivaanvahti.fi/observations/show/90801

Normally the twinned bow is visible in primary. Is there any known cases, that twinning would be seen on secondary bow...? If it is not theoretically possible, what is reason. At least that bow has less intensity...

What is the situation in Finland, visual and camera observations are about to end now... One reason is the nights are getting more light, day by day. I guess this Eta aquarids meteor shower shall be possible to follow visually on central europe ? I plan to setup my camera for IR pass filters in the ...

Comments for HROFFT... When I started to use it first, it was approx 5...7 years ago (under windows7). I have then seen a situation(s), where suddenly file saving is stopped (10min images for echoes). HROFFT did not show any errors. Also it did not cause any other jamming software. I suspect it may ...

I have setup HDSDR for periodical captures. It depends on the needs, what time you setup between captures. If bigger time resolution needed, there will be bigger amount of files :-) I also use virtual audio cable (VAC), to route audio stream from HDSDR to HROFFT. These software can work at the same ...

fyi. Together with HDSDR I have been using the HROFFT counting software. It basically detects every signal level rise on the monitored frequency. So it can capture also unwanted "echoes" like plane dopplers near TX-RX line. And if the direct signal from source is heard all the time, it also detecs i...