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Posted: 25 Jul 2017 23:36
by Salvo
I like the first, it remembers be Transformers.

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Posted: 29 Jul 2017 21:18
by Watsisname
Cheep quack honk, chirp quork squawk!

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Posted: 30 Jul 2017 10:44
by DoctorOfSpace
Watsisname, very nice, some of those are quite sharp.  Whats your camera/lens setup?

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Posted: 30 Jul 2017 11:17
by Gnargenox
Not my work, just a friend of mine's software program for finding exoplanets.
Now you can isolate signals and view them independently. That is, all other signals are removed and the dataset is folded to the desired planet's period. With so many planets 55 Cancri RV fitting is a mess!
Exoplanet Console.png

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Posted: 31 Jul 2017 10:31
by midtskogen
The dipper, Norway's national bird.
 

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Posted: 31 Jul 2017 14:50
by Watsisname
DoctorOfSpace, for those I used the Canon Rebel T3 with a 75-300mm zoom lens.  I guess it's pretty similar to yours except it doesn't have the image stabilization.

midtskogen, cute!

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Posted: 31 Jul 2017 23:06
by Salvo
midtskogen wrote:
The dipper, Norway's national bird.

I want 10 of them! Please take my money!

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Posted: 04 Aug 2017 18:55
by Watsisname
Some more dramatic images of the Sun through the smoke from wildfires in British Columbia.

Image

Image

Image

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Posted: 05 Aug 2017 04:18
by midtskogen
I hope that smoke stays out of the totality path!

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Posted: 05 Aug 2017 05:28
by HarbingerDawn
Watsisname wrote:
Source of the post Some more dramatic images of the Sun through the smoke from wildfires in British Columbia.

That red reflection on the water is magnificent.

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Posted: 05 Aug 2017 12:55
by Watsisname
midtskogen wrote:
Source of the postI hope that smoke stays out of the totality path!

I know... it's covering a big part of Washington right now, but has mostly stayed out of Oregon.  I'm thinking of inviting the politicians to come out here to to see the eclipse, so if the smoke threatens they can blow it all out to sea with hot air.

HarbingerDawn wrote:
Source of the post That red reflection on the water is magnificent.

It was so eerie.  A perfectly cloudless sky, except the sky was white, and direct sunlight was a dim red, like the last moments of sunset throughout the entire day.  When I was out driving on the highway my first reaction upon seeing the Sun's reflection on other cars was that it looked like the reflection of a streetlamp.

Another curious observation is that with smoke, the sun is very dim but the sky and surroundings are still quite bright.  Whereas during a deep partial eclipse, it is the surroundings that become dim and the sun is still intensely bright.

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Posted: 05 Aug 2017 14:11
by midtskogen
Watsisname wrote:
Source of the post I'm thinking of inviting the politicians to come out here to to see the eclipse, so if the smoke threatens they can blow it all out to sea with hot air.

:D
Careful, too much hot air could start another wildfire.

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Posted: 06 Aug 2017 22:23
by Watsisname
Well this is something interesting!

The thick smoke is still hanging over the area, and I noticed how even when the Sun is quite dimmed by it, I could still feel the heat on my skin.  Smoke works just like air does in scattering shorter wavelengths of light more than longer wavelengths, and the Sun's infrared passes through.  So I had the thought to take out my Seek infrared camera and see what the camera would pick out as the Sun vanished.  Just like in astronomy when we use infrared wavelengths to penetrate the interstellar dust.  I was not surprised to find that it worked, and it was neat to be able to show people the invisible Sun, and its invisible reflection on the water.

But what did surprise me is that, apparently, the smoke causes an infrared halo, like ice crystals do!  Check this out:

► Show Spoiler


I'm not at all sure that this halo is real and not just an artifact of the camera or sensor.  I've never heard of such a thing, and I don't know why smoke particles would do it.  I should have thought to check if the halo is still visible if I block the Sun itself, or if just the halo can be blocked.  If the smoke is still here tomorrow I'll try some tests to see.

What do you think about it, midtskogen?

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Posted: 07 Aug 2017 10:05
by midtskogen
Watsisname wrote:
Source of the post What do you think about it, midtskogen?

I think it's a corona, formed by diffraction of light by smoke particles.  The larger the particles, the tighter the corona.

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Posted: 07 Aug 2017 10:18
by midtskogen
Something from my mountain hikes this summer.  I think the exposure balance of the sky and ground matched very well in this shot.
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