George Preoteasa

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  • in reply to: Fog waves #370764
    George Preoteasa avatarGeorge Preoteasa
    Participant

    Thank you, Hans. I did not see noctilucents, sadly. The season was over. Next year I am thinking of trying it in July in North America, e.g. Alberta in Canada. It’s a bit closer and also much cheaper than (BTW) Norway.

    I did see the aurora though. Not very strong, but it showed up. See this video slide show:

    If you let vimeo take you to “next” you will also see two interesting cap cloud time lapses. I saw more cap clouds in Norway than I have seen in the rest of my life :-)

    in reply to: Contrail Thread Volume IV #360964
    George Preoteasa avatarGeorge Preoteasa
    Participant

    All these pictures, Keelin and Hans, are incredible. I wish I could take some like that.

    Nevertheless, this one from Earth and Sky caught my eye. Can’t help but also notice that the lobes point up.

    https://en.es-static.us/upl/gravity_forms/6-d184048789a60d766a02a8e43117298b/2019/08/Angle-Choir.jpg

    Hope the link works, please let me know if it does not.

    in reply to: Optical Phenomena Volume III #355320
    George Preoteasa avatarGeorge Preoteasa
    Participant

    Very nice shots, folks, keep it up! It’s the CHA season but I have not seen any so far this year. We had a very wet year, actually going back to the fall. So we don’t have the right kind of clouds. Therefore counting on you in other parts of the world.

    in reply to: Lenticular at night – time lapse #354822
    George Preoteasa avatarGeorge Preoteasa
    Participant

    Thank you, Keelin.

    in reply to: Lenticular at night – time lapse #354727
    George Preoteasa avatarGeorge Preoteasa
    Participant

    Thank you folks. I used a fast lens, I think it was set to F2.8, exposure 8 secs, frames taken at 10 sec interval to give time to write to the card. The ISO was set to 4000, but it was too low. If you look on vimeo, you will also see the earlier version. Pictures look good on the camara monitor, but are too dark to see on a phone screen in daylight. So I brought all the frames into Lightroom and increased the exposure. I also removed some of the yellow color, which I considere light pollution. (This place is in the Catskill mountains, but there is still some light pollution around.) Et voila!

    I am just learning how to use these tools. Last winter I bought a small telescope and joined an astronomy club. They offered an astrophotography class, which I eagerly attended. I have also watched a few how-to videos on the subject. This is the first time I get good conditions and manage to get something out of them.

    Here is a cloud shot while awaiting the dark. I think a cumulonimbus was passing to the south and this may be the canopy. Or maybe a lenticularis. (I am talking about the higher cloud.)

    _A011396_e

    in reply to: Can anyone explain/name this phenomena? #353967
    George Preoteasa avatarGeorge Preoteasa
    Participant

    Looks like lenticularis, a pile d’assiettes where the stack is dramatically shifting off center. Lenticularis clouds are common in mountainous or hilly areas.

    https://en.wikipedia.org/wiki/Lenticular_cloud

    Do you have more details about the circumstances? Where or how log did you observe it?

    in reply to: Wave Clouds Volume II #353095
    George Preoteasa avatarGeorge Preoteasa
    Participant

    I am not a frequent visitor here so it’s nice to be treated to some very nice pictures, Keelin and Hans!

    Incidentally, Sunday’s Cloud (if you are getting those mails) is one of Hans’s shots. When I opened the mail, even before seeing the whole picture, I knew it was one by Hans, probably with his 400mm telephoto. Hans, you have developed a very personal style, which I think people can recognize just like one would recognize a known painter. Would you post the Sunday cloud picture here for people to enjoy and see what I mean?

    in reply to: Optical Phenomena Volume III #352411
    George Preoteasa avatarGeorge Preoteasa
    Participant

    Ha-ha “the times”, classic trap. These pics, look a lot more like CHA. The remarkable thing is that this phenom is seen at such high latitudes. But then it’s just about solstice.

    Nice shots Hygge. I enjoyed seeing them despite the wrong classification.

    in reply to: Optical Phenomena Volume III #351351
    George Preoteasa avatarGeorge Preoteasa
    Participant

    Hans, I went through a number of shots. I saw three of yours, clearly visible noctilucents, and verified them. Very good shots, though not as good as what you posted above, obviously taken with a real camera. I have seen a few others, but they are really too dark to tell if there was anything. Too bad, people probably saw noctilucents, but the phone camera cannot capture them. Perhaps you can check them and help out.

    Regarding the time of your above spotting (around midnight). Checking the timeanddate.com sun position for Amsterdam (probaby not very different for the rest of the Netherlands) you were in between Nautical and astronomical twilight. When I will be in Norway in August, at a much higher latitude, around Lofoten and Senja, I will be in nautical twilight in August. It does not even reach astronomical twilight. So I suppose the sun is at about the same hight (depth?) below the horizon as it was for you.

    in reply to: Optical Phenomena Volume III #351205
    George Preoteasa avatarGeorge Preoteasa
    Participant

    Beautiful, Hans! You are lucky to live at that latitude. I am curious, are people in the street noticing them? Around what time was this? (I know the theory, sun below the horizon, etc.)

    I’ll be in Norway the second half of August and perhaps catch them.

    in reply to: Optical Phenomena Volume III #350628
    George Preoteasa avatarGeorge Preoteasa
    Participant

    Looks fantastic! Assuming this is not faked, I wonder what the relative positions of the sun, plane and observer need to be.

    in reply to: Lightning pictures #350493
    George Preoteasa avatarGeorge Preoteasa
    Participant

    Nice! I hope you’re in a safe place when taking these shots.

    What is your technique, i.e. exposure, duration of a shot, etc?

    in reply to: Is This Cloud a Type of Undulatus? #348843
    George Preoteasa avatarGeorge Preoteasa
    Participant

    Yes, it is an undulatus.

    in reply to: Drone Tornado Video #344223
    George Preoteasa avatarGeorge Preoteasa
    Participant

    Incredible video. At moments I wondered if it is not just an animation. But I think it’s real. I hope to witness something like that some day.

    Speaking of tornadoes, there was one in Romania (my native country). Tornadoes are unheard of in that area.

    https://www.bbc.com/news/world-europe-48119498

    But why be so surprised? Romania has a relatively large plain in the south. When I was there last time, I took this picture. It reminded of the larger US great plains. I can picture a tornado forming here:

    IMG_0697

    in reply to: Sunsets and Sunrises Vol lV #328036
    George Preoteasa avatarGeorge Preoteasa
    Participant

    A colleague of mine caught this sunrise scene while driving into work (I have to believe he was stopped at a light) and knowing my interest in clouds wanted to share it.

    So what kind of clouds are these? Altocumulus? I have trouble identifying with confidence.

    Anyway, I think the colors and shapes are quite unique.

    sunrise

Viewing 15 posts - 46 through 60 (of 353 total)