AKM e.V. Forum

Hello there Marcel, this is interesting display, with this mix of odd radii and conventional halos. What you caught between 9° and 18° halo is the 13° halo . We got similar display (halos types, sharpness) this past two days from eastern part of France and the 13° halo was there too. Greetings from ...

Hello there, This is a nice one indeed. I tried over the years to get the same arc from the Moon during Winter, and I might have got it too. Like the one you had, I did not get any circumscribed halo, nor other plate crystals related halos, but instead, some odd radii ones: 9° and 35°, along with th...

Very nice ones ! Congratulations!

We had, from Jura, Moon halos too those past nights, but not as sharp as those ones.

Nice ones, Marcel!

Hello there Carl, nice one on the Moon for this last night. I was on the roof too for the catching, but I forgot to turn the lense heater on, so manage to get nice droplets on the camera instead of halos. Almost 2 month without halos picturing here too, all the automatisms are not back yet. But as y...

Hello there Michael, indeed, with discussion on this matter on the french forums, we thought also that giving the fact that matter tends to follow magnetic lines, the shape seen from my location where not rectilinear as it appear to be, but curved towards the south, like you wrote also, showing the ...

Hello there Carl, indeed, there might be more to find in the pictures. Thank you for your hints. Here is a shared folder of what I managed to render so far, but I am not finished yet. For the blue spot, here is a explanation on what to look for when searching for it, if you don't already know this l...

Hello there, the shown images in this new of Spaceweather is a consequence of discussion with Emmanuel Baudoin (his images), on french forum Astrosurf , in parallel of this present topic on your forum. We try to draw the attention of Spaceweather in order to gather more images from different locatio...

Thank you for your answers. Indeed, for the odd radius halos, I can have with mixed pyramidal and non-pyramidal crystals too ( last 17th October gave me a nice view too ) For the 9° halo quesiton, for my part, I often get 9° halo alone among other non-pyramidal halos, but the shape of the 9° halo is...

Hallo Jochen, this is a nice display. UsM stand for Unsharp Mask (to enhanced details of a certain size on an image, here the size in pixel correspond to the "thickness" of the color diffraction within halos) RB (in english B-R, for B-minus-R which stands for a processing technique with a ...

Congratulation on this statistic work, Carl! Since you wrote that you are using your all sky camera in case you miss some halos, did you ever noticed, in cases you are using both set up, any differences between what you take with your Nikon and with your allsky camera (with the same regions of sky p...

Hello there, I will add a stack of the phenomenon done with 7 different images, showing the vertical extension better. (495)_Blue-vIII-7s7-UsM.jpg We were several to picture the auroras from France that night, maybe there are more picture of the phenomenon so that we can add data to this. Salutation...

Hello there, nice work on this matter ! While reading this post (and the previous one earlier in September), I realize this was what I got on my pictures on 25th september night, between 4:09 and 4h32. So it gave me the need to do the math (while listening to Jochen Hippel remixed amiga tunes ;-)), ...

Nice ones indeed. We did not get any Wegener on 16th October (at least, I haven't found them yet), but we got them on 17th october, along with a lot of different halos (Lowitz, Parry, quite all the circular odd radii halos, and some other). I wonder what you might have caught from Germany on this 17...

Thank you a lot for the link to this paper, I did not know it was available online so simply. What an incredible source of information! For the fact I though that you were in "that game" as you said, indeed your avatar might have lured me into that thought. My mistake then. I see the 13° i...

Hello there Elmar, For sure it is, I agree with what you are saying about quality of contribution. For the old website version, I ran into it 2 weeks ago, because I kept looking for specific information and because I was not resigned to let it go, as it has been my main source of understanding of so...

Hello Carl, well, this is really a big amount of work you are doing there for the translation list for all the halos, and I understand better why you were surprised by the "23° sundogs" name. Indeed, para means beside, and it is more commonly on the right or on the left but there are all t...

In this regard it is actually similar to the sundog, only in vertical direction. Indeed, here was the source of "my" "23° sundog", that was in fact 23° (upper) parhelion, with the fact also that sundogs and parhelion are the same to me. (So the "P23" mentioned earlier,...

Indeed, on your last image (and a very slight hint on the second too), you clearly have the so called 13° halo (even if the angle is not quite 13° indeed, and the the red part of the ring, so the grey part in B-R rendering has at least 1° between it's inner and it's outer borders, if i may say). And...

Hello there, we had similar halos that day too in France, eastern part, with a nice 23° sundog like yours.
N.R.