tag:blogger.com,1999:blog-1046232325583098770.post4428826511539357633..comments2023-10-11T05:59:00.326-07:00Comments on cipofuzo02: Elliptic halos over DeventerÁgnes Kiricsihttp://www.blogger.com/profile/08611168432247808121noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-1046232325583098770.post-73939313576721905962006-04-25T11:06:00.000-07:002006-04-25T11:06:00.000-07:00Peter, do you mean, in most elliptic halo displays...Peter, do you mean, in most elliptic halo displays the shape of the ellips is not constant? The "solitary straight arc" and the "connecting arc" are very, very intriguing indeed! Can you send me drawings of the "arcs" (in an e-mail), and, most of all: are you quite sure the strange arcs were really halo arcs? <br>Shortly before the Deventer elliptic halo display, I observed from Rijswijk (a suburb of The Hague, 128 km WSW from Deventer)between 10.20 and 10.25 U.T. a faint part of the 22 deg.halo, a clearly visible part of the parhelic circle with a likewise clearly visible 120 deg. parhelion, in about NNE.<br>Peter, when I called you about that display (before the elliptic display), I can remember, you told me, you saw a gap in the altocumulus, with cirrus in that gap (gap and cirrus caused by an airplane). Is it possible, there is a connextion between the gap with cirrus and the elliptic event?Frank Nieuwenhuysnoreply@blogger.comtag:blogger.com,1999:blog-1046232325583098770.post-636690783312279492006-04-25T17:44:00.000-07:002006-04-25T17:44:00.000-07:00Peter I notuced the same thing in my elliptical ha...Peter I notuced the same thing in my elliptical halo on Dec 15th sometimes the top of the ellipse would be sharp and other times the top was rounded and unlike your is was white and like yours it was in virga and evaporated AC clouds and that particular halo lasted 15 to 20 minutes and it was one of three observed in the USA and out of all three I made two of those observations.Michael Ellestadhttps://www.blogger.com/profile/07796757303235722191noreply@blogger.comtag:blogger.com,1999:blog-1046232325583098770.post-9221595277602839852006-04-25T22:13:00.000-07:002006-04-25T22:13:00.000-07:00Sometimes elliptical halos are clearly colored. Ja...Sometimes elliptical halos are clearly colored. Jari Piikki has phortographed one such case. One way to get distinct colors is to have big crystals, I've heard. <br><br>It's the same thing with 9° halo and arcs. Mostly they are whitish, showing perhaps only reddish in addition. But in some rare cases whole color spectrum is seen. <br><br>The distortions you tell are not uncommon in elliptical halo displays. It's often difficult to tell what's going on. It looks like there are no constant crystal angles.Marko Riikonenhttps://www.blogger.com/profile/01896323668081551107noreply@blogger.comtag:blogger.com,1999:blog-1046232325583098770.post-69269628405666061152006-04-26T12:14:00.000-07:002006-04-26T12:14:00.000-07:00Besides the variation in radius and the distortion...Besides the variation in radius and the distortion in shape, elliptic halos sometimes show an elliptic "glare", as observed initially in the May 13th 2005 The Hague solar display, and in the March 7th Deventer lunar display. As far as I know, there is still no good explanation for this curiosity.Frank Nieuwenhuysnoreply@blogger.comtag:blogger.com,1999:blog-1046232325583098770.post-29113217974046460242006-04-26T12:17:00.000-07:002006-04-26T12:17:00.000-07:00Besides the variation in radius and the distortion...Besides the variation in radius and the distortion in shape, elliptic halos sometimes show an elliptic "glare", as observed initially in the May 13th 2005 The Hague solar display, and in the March 7th 2004 Deventer lunar display. As far as I know, there is still no good explanation for this curiosity.Frank Nieuwenhuysnoreply@blogger.com