Atmospheric optical phenomena

[But]

The cause for the reversed fainter rainbow is usually just one more reflection inside the water droplet, so it could be just the other effect on top of that. It looks like a reflection rainbow from the way it splits near the base, and if you look carefully at images of those, there's usually a very faint copy of the whole thing visible (with reversed colours). The one above looks very bright, there may have been some image processing or longer exposure.

Reflection Rainbows

[Ensign Steve]

"Iridescent Pileus Cloud"



Is it real? Don't know. Is it beautiful? Yes.

Iridescent pileus cloud : interestingasfuck

[ceptimus]

What causes rare rainbow arcs? - Sixty Symbols -...

[JoeP]

Amateur stargazers capture new form of northern lights | Science | The Guardian

See the new form of the northern lights...

“Over the years I noticed that I am always explaining the same thing,” she said, adding that her experience spurred her to write a book. “It is similar [to] a bird-watching book, but instead of birds you take the aurora forms.”

As part of the project Palmroth asked the community of citizen scientists to capture images of particular forms. But there was a conundrum. “Some of them asked me ‘what about these stripes, which form are they?’,” she said.

The article continues with discussions of waves in the atmosphere, and

a mesospheric bore, whereby a particular wave is filtered out and bent, allowing it to travel horizontally between two layers in the atmosphere.

[fragment]

mesospheric bore

dibs on the user title

[But]

Thousands of photographs taken by the hobbyists were analysed by space researchers, who realised that a certain form of the northern lights did not fit into any pre-existing categories.

Is it a new form, err.. of green? Waving differently? OK, I'll trust these sciencists.

[JoeP]

Originally Posted by But

Is it a new form, err.. of green?

a nugget of purest green!

[Sock Puppet]

[Ensign Steve]

This is not atmospheric, but what do you call this optical phenomenon? Is it refraction? The caption says the flower is "captured" in each drop. It's water drops on a spider web. I'm pretty sure it's an actual photo, not a composite or photoshop job.

[Ari]

Step one, find a nice spiderweb, step two, create a nexus event causing reality to unravel, step 3, don’t forget to set your f-stop!

A hundred tiny lenses, the nice round surface and refractive index produce a pretty wide angle view, so get something close enough and all the drops in the area are going to display the same thing. If you zoom into one of the three center right drops you can see the trees and sky just on the edge of the bubble.

But not quite the same view, I’m pretty sure it’s real too as each of the drops produce a slightly different angle, and each flower is ever so slightly off center. This is partly how compound eyes produce parallax while also being so close to each other.

[ceptimus]

https://www.bbc.co.uk/news/uk-england-tyne-65745708

[fragment]

Anyone else been out aurora watching/photographing the last couple of days? There's another flare on the way.

The stormy sun erupts with its biggest solar flare yet from a massive sunspot — and it's still crackling (video) | Space

[Kamilah Hauptmann]

Last night was a banger; not the greatest I’ve ever seen but top two. Check out the Northern Lights Reddit.