AKM e.V. Forum

Thanks Claudia - "you [English] can say a lot with just a few words". The English too often also use many words to say very little .

I have seen this discussion rather late. As Elmar suggested, I invented the name 'zero order glow' perhaps 15 or more years ago. There seemed to be no name or even recognition of the phenomenon of intense light in the direction sunwards when there was falling rain in that direction. 'Zero order' bec...

[Elmar] Not that I want to solicit anyone to break the confidentiality here, but may we assume, that these concerns have been settled in the given newer case? And what, in hindsight, about the older one? I'm convinced that the recent image is genuine by an honest photographer. I'm sure that Raymond ...

Bertram is probably confusing the recent Optics Highlights (OPOD) posting
with this old image (linked on the current OPOD page)
http://www.atoptics.co.uk/fz857.htm
That image was extensively discussed at the time.
Les

This picture is recent and has not been published anywhere before. It is genuine. We think that the most probable explanation is a twinned bow from a bimodal drop size shower. The spacing is, however, unusually large and the limited section of primaries that are visible does not have the usual conve...

Congratulations Daniel. A magnificent sighting and picture. It shows that Europe also can have excellent CHAs and that they are worth searching for.

Les

A magnificent display - surely one of the greatest. Congratulations Thomas!
Now on OPOD at http://www.atoptics.co.uk/fz1070.htm
Les

Beautifully done Michael!

Enjoy Fairbanks.

Les

>Ein Spiegelbogen scheidet aus, da der Winkel nicht stimmt (Spiegelbogen müßte steiler sein). A wet roof tilted so that the sun made a glancing reflection could create the 3rd rainbow. But it would have to be large and along the direction of the sun behind or ahead of the camera. Unfortunately, it i...

Dear Elmar and all, I tried two colour densitometer scans across star calibrated images of the Bainbridge 44 degree parhelia - http://www.atoptics.co.uk/halo/44pars.htm . The red/blue angular separation was consistent with two 60degree prism refractions. However, the signal to noise ratio was very p...

I have enhanced several of the original images that made up Peter Rosen's panorama. From them, a 44 degree parhelion looks reasonably likely.

Wonderful. Wirklich wunderbar. Herzlichen Glückwunsch Claudia!
Les

There will be more of these peculiar bows later this week.
Les

Hallo zusammen, in http://www.meteoros.de/download/meteoros_free/Meteoros_2008_05.pdf gibt es auf S. 88 zwei Abbildungen der Stratosphären-Temperaturen am 19./20.02.2008 als PSC für extrem farbenprächtige Dämmerungen in Deutschland sorgten. Gibt es denn eine Quelle, wo man an aktuelle Karten gelang...