Thanks. Unfortunately the photographing location was terrible and I consider myself lucky with this treeless spot. I'm still waiting pyramidial parhelias over here...looks like you Finnish guys have more luck with these !
Krusel, you should be able to see at least one solitary 23 parhelia arc each summer assuming Estonia is not much different from Southern Finland. They are seen during hot weather periods, but can be seen also in the beginning of end of the period when it is not so hot. On many years during these periods 23 plate arc is more common than 22 upper tangent arc.
Often these solitary 23 parhelias are not actually solitary. Stacking should reveal very faint 9 halo and possibly 18 parhelia.
Yeah the June 5th display thats one of the best odd radius halo displays yet. Yeaterday I got nice 18 and 23 degree plate arcs with their halos and have been doing photo stacks as well.
Marko I did that and the composite looked ugly showing wavy artifacts that were discolored.
Hang in there Agnes I'll GIT R DONE!:) Its raining right now and have nothing better to do except internet and run my lathe and turn wood into custom bowls and vases to sell.
Marko and I have been discussing this unsharp masking order from the beginning of times... Sometimes, yeah, those wavy artifacts become visible if you only usm the stackked photo in the end. Sometimes it does not make any difference whether you usm the individual frames or the single stackked one. And of course you are always working with 16 bit tiffs.
I have found it quite easy to instruct a photo processing program to do usm to each individual frame. Once you ignite the process the computer will batch the rest without your involvement. This extra step assures that the possibly emerging wavy artefacts are smoothened out (almost completely). 12 bit RAWs or not, I sometimes get those artifacts.
I have never encountered these artifacts unless the file has been to 8-bit at some point. Perhaps some of the actions drop the bit depth without user approval.
As I found out the quality of your cameras chips plays the biggest role in this imaging process...use always the lowest possible iso settings and shoot raw. In camera keep the image parameter settings moderate - don't over-saturate and over-contrast, of course when shooting raw you can always change these values later but depending on the amount of shots and your cameras manufacturer software it could be pain in the ass afterwards.
I was thinking along the same lines until Jari talked me over going on RAW. These days, realizing that I had accidentally photographed a good display in JPG would an event of horror.
Cool! That looks similar to my display I got after the elliptical halo. Since there was AC did you see any elliptical halos?
ReplyDeleteThis Ac was not giving icy virga, so no chances for ellipses.
ReplyDeleteGood job!
ReplyDeleteSame here..my display on 25th didn't last long. The peak time was about 3-4 minutes overall and 8 stacks until the ice-clouds were swept away.
ReplyDeleteNice display Krusel! Got there 20° and 24° halos, but no 18°. That's rarer type of combination.
ReplyDeleteThanks. Unfortunately the photographing location was terrible and I consider myself lucky with this treeless spot.
ReplyDeleteI'm still waiting pyramidial parhelias over here...looks like you Finnish guys have more luck with these !
Nice one there Marko K. That display I got has upper 23d plate arc possible 9 and 20d ca and it formed after the elliptical halo.
ReplyDeleteKrusel, you should be able to see at least one solitary 23 parhelia arc each summer assuming Estonia is not much different from Southern Finland. They are seen during hot weather periods, but can be seen also in the beginning of end of the period when it is not so hot. On many years during these periods 23 plate arc is more common than 22 upper tangent arc.
ReplyDeleteOften these solitary 23 parhelias are not actually solitary. Stacking should reveal very faint 9 halo and possibly 18 parhelia.
The fifth June display... Wonder how many years - decades - it takes to get another one.
ReplyDeleteYeah the June 5th display thats one of the best odd radius halo displays yet. Yeaterday I got nice 18 and 23 degree plate arcs with their halos and have been doing photo stacks as well.
ReplyDeleteYeah I'll have Agnes post them since the user interface is complicated rocket science and is difficult to use.
ReplyDeleteI still have not finished the stacks yet and when I do mine I do it manually. I do one where photos are unprocessed and then another with USM.
Don't worry I'll GIT R DONE!:)
Michael, you just do one without usm and then usm that. The result is the same as if you would stack usmed individual photos.
ReplyDeleteYeah, you are right about the blog interface.
Looking forward to get your photos for posting, Michael!
ReplyDeleteMarko
ReplyDeleteI did that and the composite looked ugly showing wavy artifacts that were discolored.
Hang in there Agnes I'll GIT R DONE!:) Its raining right now and have nothing better to do except internet and run my lathe and turn wood into custom bowls and vases to sell.
Michael, you get those artefacts if your photos are 8bit. Next time take RAW photos (and make sure to open them in photoshop as as 16bit).
ReplyDeleteRaining here in Tampere as well.
Michael, I gave a presentation about the matters regarding bit depth, RAW and post processing in the last halo meeting that was held in Finland.
ReplyDeleteIf you want, I can send you the slides.
Marko and I have been discussing this unsharp masking order from the beginning of times... Sometimes, yeah, those wavy artifacts become visible if you only usm the stackked photo in the end. Sometimes it does not make any difference whether you usm the individual frames or the single stackked one. And of course you are always working with 16 bit tiffs.
ReplyDeleteI have found it quite easy to instruct a photo processing program to do usm to each individual frame. Once you ignite the process the computer will batch the rest without your involvement. This extra step assures that the possibly emerging wavy artefacts are smoothened out (almost completely). 12 bit RAWs or not, I sometimes get those artifacts.
I have never encountered these artifacts unless the file has been to 8-bit at some point. Perhaps some of the actions drop the bit depth without user approval.
ReplyDeleteAs I found out the quality of your cameras chips plays the biggest role in this imaging process...use always the lowest possible iso settings and shoot raw. In camera keep the image parameter settings moderate - don't over-saturate and over-contrast, of course when shooting raw you can always change these values later but depending on the amount of shots and your cameras manufacturer software it could be pain in the ass afterwards.
ReplyDeleteI could do RAW images but they just like tifs they take up too much hard disk space.
ReplyDeleteI was thinking along the same lines until Jari talked me over going on RAW. These days, realizing that I had accidentally photographed a good display in JPG would an event of horror.
ReplyDeleteWell said MarkoR, anything below RAW is from evil.
ReplyDelete