POV-Ray : Newsgroups : povray.binaries.images : total solar eclipse realism Server Time
23 Apr 2024 21:21:35 EDT (-0400)
  total solar eclipse realism (Message 1 to 3 of 3)  
From: omniverse
Subject: total solar eclipse realism
Date: 23 Aug 2017 21:50:01
Message: <web.599e30518d02db0a9c5d6c810@news.povray.org>
I took the challenge when my brother wanted to know what a total eclipse looked
like.
He didn't drive the 150 miles to see it (Oregon) because of all the talk about
expected traffic problems.
In my case there weren't any. In fact, I began to think the thing was cancelled
upon my arrival to the central Tennessee destination 5 hours before. Was just
another ordinary mid-morning Monday. And that was with 10000 free solar filter
eyeglasses being given away at the Wilson County Fairgrounds beginning 10 AM, or
2 1/2 to 3 1/2 hours ahead of that eclipse. I was first in line at one of the
several gate entrances.

These renderings include one of my few total eclipse photos for the corona or
halo. What surprised me so much was an appearance of what looked to me like the
kind of annular eclipse (moon too far away to fully cover sun) I've seen photos
of. Albeit with solar filters to make the sun a dim orange.
As I described to everyone, it was as if a yellow-white neon sign letter O was
encircling the black void of moon disk. And from there outward was the pale
blue-white glow shining away from it.

I found info saying the sun/moon should be pea-sized, or similar to aspirin
pill, held at arm length. Maybe... maybe smaller when I tried that by looking at
these pictures standing farther away. If I got a distance away to make the
yellowish ring narrow and blend into the halo that seemed best, but also keep
the bright ring appearance.

Another observation was that I wear eyeglasses for nearsightedness, meaning I
don't need reading eyeglasses (so eyes only) for close things like a book but
must be more than 6 feet away to see anything clearly with eyeglasses on.
Intending these renderings to be looked at from smartphone or computer and
adjust your position to rescale and hope it can be seen as expected.


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From: Cousin Ricky
Subject: Re: total solar eclipse realism
Date: 26 Aug 2017 12:19:06
Message: <59a19f7a$1@news.povray.org>
On 2017-08-23 09:48 PM (-4), omniverse wrote:
> These renderings include one of my few total eclipse photos for the corona or
> halo. What surprised me so much was an appearance of what looked to me like the
> kind of annular eclipse (moon too far away to fully cover sun) I've seen photos
> of. Albeit with solar filters to make the sun a dim orange.
> As I described to everyone, it was as if a yellow-white neon sign letter O was
> encircling the black void of moon disk. And from there outward was the pale
> blue-white glow shining away from it.

I've seen 3 totalities (60% success rate, BTW).  I have never perceived 
a yellow ring around the Moon, and I've never heard anyone else describe 
such a feature.  The corona has looked a neutral silver-white to me.

Then again, I have never been able to make out the red solar prominences 
either, although I've heard many people describe them.

It seems that the impression is different to different people.  The only 
resolution I can think of is to physically drag your brother to the next 
total solar eclipse.  ;-)


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From: omniverse
Subject: Re: total solar eclipse realism
Date: 26 Aug 2017 17:50:00
Message: <web.59a1ebc83866e518471280dc0@news.povray.org>
Cousin Ricky <ric### [at] yahoocom> wrote:
> On 2017-08-23 09:48 PM (-4), omniverse wrote:
> > These renderings include one of my few total eclipse photos for the corona or
> > halo. What surprised me so much was an appearance of what looked to me like the
> > kind of annular eclipse (moon too far away to fully cover sun) I've seen photos
> > of. Albeit with solar filters to make the sun a dim orange.
> > As I described to everyone, it was as if a yellow-white neon sign letter O was
> > encircling the black void of moon disk. And from there outward was the pale
> > blue-white glow shining away from it.
>
> I've seen 3 totalities (60% success rate, BTW).  I have never perceived
> a yellow ring around the Moon, and I've never heard anyone else describe
> such a feature.  The corona has looked a neutral silver-white to me.
>
> Then again, I have never been able to make out the red solar prominences
> either, although I've heard many people describe them.
>
> It seems that the impression is different to different people.  The only
> resolution I can think of is to physically drag your brother to the next
> total solar eclipse.  ;-)
 Hei s determined to go see it in Texas next time and I'll probably just drive
to Arkansas.

 I was considering it to be some kind of illusion, but to be perfectly honest
when the totality started and I looked up from my camera that was exactly what I
saw.  I only know I looked up least several seconds right at that. And then I
went back to taking more pictures while glancing at it naked eye occasionally. I
can only remember staying very bright along the edge of the moon but nothing
about color after that first look.


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