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January 6, 2019 at 12:35 am in reply to: Northern Lights – Aurora Borealis – Scotland – 4 November #324001Don HatfieldParticipant
George – Yeah, we went to Bullocks too. Excellent fish there. Somewhere in there is a bit of my graffiti. Was the photo of the old lady smoking the pipe still there? The moosehead by the cash register?
These pics are excellent, the trees really give the viewer the scope of the aurora, the feeling that you’re really THERE! , Especially the moon over the trees. I’m still trying to figure out where the white comes from; I didn’t see any of that when I was out that way (reflection of Yellowknife off cloud/haze?). Try reducing the exposure in LR in those areas to bring out some additional color .
Also looked up your mirrorless camera. Seems the bias towards green is in the artifacts and noise that low light has a tendency to produce. I really don’t think that has an impact on your aurora pics. Any of that should go away when you clean up the pics in LR. (As mentioned I happen to use Canon; the RAW converter they supplied cleans up pretty much all noise quite well). Also proper exposure on-site eliminates a lot of noise too; . Looks like you got that part down pat.
The articles I read indicate that Sigma lenses also reduce noise better than Sony lenses do. I have a few and they are good lenses; you might want to check them out.
PS – These colors are very much what I remember, so congrats on accurate captures.
Don HatfieldParticipantGeorge – I’d love to even SEE some sundogs, much less get them captured the way you did.
Michael – A 2019 explosion of joy
Keelin- What a nice sharp line between blue and its complimentary color, yellow. Good catch.
Hans – The white is stabbing the dark to disperse it, knowing that 2019 is going to be a good one.Unfortunately, completely overcast in Dallas, so that even the asperitas (if there was any) was hidden. A bit like Lincolnshire, only carried to the extreme.
Great 2019 to everyone!!
January 2, 2019 at 11:59 pm in reply to: Northern Lights – Aurora Borealis – Scotland – 4 November #323454Don HatfieldParticipantExcellent photo, capturing not only the green, but other colors as well.
For those not in the know –
The green comes from excited oxygen atoms. Actually the red is oxygen too, just higher up in the atmosphere. Different electrons emit different colors when coming back to their “rest orbit”; the amount of energy “pumped” into the atom causes the various electrons to absorb the energy.
PS – If you saw some blue, then that would be nitrogen.For a more interesting, readable as well as technical explanation see :
AURORA : In Search of the Northern Lights, by Melanie Windridge (especially Ch4 and Ch5).Not sure what causes the white I see in your photo.
One of the most awesome things to me was seeing the curtains actually move in front of my eyes. From your photo, I bet you DID see that!
Looking forward to a Cloud-A-Day from you.
Don HatfieldParticipantJust took a look at the link Hans provided of the Rare Swedish Halos. If anyone has not done so, I highly recommend this. Makes me want to move to Sweden.
Thanks Hans !!December 30, 2018 at 12:05 am in reply to: Northern Lights – Aurora Borealis – Scotland – 4 November #322773Don HatfieldParticipantGeorge – Really looking forward to some of your aurora photos.
Don HatfieldParticipantHygge – I also thought the haiku was very moving. Thank you for your poetic effort. And I hope your log-in issues are over. Just FYI, clearing the history and/or cache might also work (it helps my wife).
Hans – This is not me, but another CAS member, one I’m a tiny bit envious of.
The secret : warm water and a cup to hold it in (you can see the cup in his left hand, at the point this photo was taken), very cold air, and a strong (or maybe not) throwing arm. Voila! Instant cloud. (Classic cloud creation technique.)
Also – Apparently R Stroud got right to it. I wonder what measurements (or whatever else) he recorded.
Don HatfieldParticipantI think that every CAS member dreams of having their own personal cloud.
Don HatfieldParticipantHans – the simulated raindrops make me wonder if I need a simulated umbrella after all.
Don HatfieldParticipantMichael – The sci-fi buff in me says : Arizona B&W # 199 looks like the Starship Enterprise. Perhaps Cpt Kirk really did visit Earth in our century.
Above and beyond that, the arrangement of the (lenticulars and cumulus ?) makes a wonderful; photo. The cropping of the photo really emphasizes them, as there are no distracting elements.
Thanks for your continued inspiration. You make me want to move away from my BBS.
Don HatfieldParticipantKeelin – Thanks for this; what a creative combination. Hans – I bet the exhibition was awesome.
Pushing a little bit on the boundaries – –
“And to my complete surprise, you and I were dancing on a cloud somewhere”
–Song written by Mack Gordon & Josef Myrow
-From the film “My Baby Smiles at Me” (1948)
Don HatfieldParticipantKeelin – The wing tip Sun Dog is Phenomenal!! Should be included in one of Gavin’s calendars, Cloud Of The Month, – – something.
Good Eye
Don HatfieldParticipantExcellent artwork, Hans, Well worth the (fortunately short) wait. What grabs me is that the photo is both hard and soft at the same time. As Keelin says – a veil.
Don HatfieldParticipantHans – There’s a lot of threads in this CAS Forum, with your name and photos plastered all over them. If this skywriting photo is only half as good as the others of yours that I have seen, then it will definitely be worth waiting for. Not only your photos, but also your commentary, have re-inspired me. This is not to say that Keelin, George, Michael, Laurence, and all the others who have made this so much richer.
Thanks to you all!
Don HatfieldParticipantTo George – Yes, that’s where I spotted this. However, the timing coincided (more or less) with our Independence Day celebrations.
To Hans – As the 1806 nursery rhyme says : “Twinkle twinkle little star, How I wonder what you are”
In other words, I have no clue. I never saw a biplane, blimp, giant hand, or anything else. No noise, no other contrails, Just the Dallas typical BBS (Boring Blue Skies).Don HatfieldParticipantUnable to beat Hans’ 26 contrails –
I submit a mere 10, perhaps appropriate for the season
(actually spotted 6 months ago)-Don
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