Nonetheless we're not discussing how it looks, rather how to simulate it 
with an area_light. The majority of the light comes from the sun itself, not 
the scattering (since if you look at the sun through a filter you can see 
it's disk clearly), hence I'm using a lightsource to simulate the sun and 
radiosity from the HDR dome to simulate scattered light from the sky.

-- 
Tek
http://evilsuperbrain.com

"Alain" <ele### [at] netscapenet> wrote in message 
news:4623e6d1$1@news.povray.org...
> Tek nous apporta ses lumieres en ce 15-04-2007 13:09:
>> "Darren New" <dne### [at] sanrrcom> wrote in message 
>> news:46225066$1@news.povray.org...
>>> Tek wrote:
>>>> The reason it's hard to look at the sun is it's brighter than the moon.
>>> Right. I meant, it's difficult to even look within about 5 degrees of 
>>> the sun. I think the disk that's projecting light is a lot larger than 
>>> 0.5%. Of course, in POV you have to do things somewhat differently to 
>>> get the same effect.
>
>> I'm not sure I follow. The sun's disk is 5 degrees in radius from earth, 
>> the brightness of it doesn't make it any larger (like I say you can use a 
>> filter to see that all the suns direct light comes from that disk). 
>> Povray can simulate a circular area light of the same angle and 
>> brightness. The only reason I'm using a larger one is because I'm taking 
>> some artistic license, in truth a small ball on a table would have an 
>> almost perfectly sharp shadow.
>
> The Sun's real apparent radius is 0.5 degrees. It's extreem brightness 
> does make it look much larger, as even with a very small amount of 
> scettering, that scattered light is still blinding.
>
> -- 
> Alain
> -------------------------------------------------
> I can read your mind, and you should be ashamed of yourself.

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