Mie scattering setting?

Have a question about using Celestia? Check here first for FAQs and helpful advice.
Forum rules
Please help to make this forum more useful by checking the FAQs before posting! Keep it clean, keep it civil, keep it truthful, stay on topic, be responsible, share your knowledge.
Topic author
ElChristou
Developer
Posts: 3776
Joined: 04.02.2005
With us: 19 years 9 months

Mie scattering setting?

Post #1by ElChristou » 11.04.2009, 20:14

Tx to Asteroid who post a link in Linuxman ISS thread with beautiful shots, I'm now in front of little problem. Have a look: true shot versus a BMNG texture + some Mie scattering settings following (after the pict) within Celestia:

Blue.jpg


The mie scattering settings I'm using for the above screen shot: (settings from Fridger if I'm not wrong)

Code: Select all

Mie                    0.0050
MieAsymmetry    -0.35
Rayleigh            [ 0.0008121 0.0020775 0.00375 ]
Absorption            [ 0.00057 0.0004 0.0 ]
MieScaleHeight   15


Now, what kind of setting could give a result similar to the above shot from ISS?
I'm conscientious my screen is probably not at the right angle/distance/time but the difference is so huge that I don't think it's so important at this point. No need to say I never saw such blue under whatever circumstances within Celestia.
Image

Avatar
t00fri
Developer
Posts: 8772
Joined: 29.03.2002
Age: 22
With us: 22 years 7 months
Location: Hamburg, Germany

Re: Mie scattering setting?

Post #2by t00fri » 11.04.2009, 21:15

ElChristou wrote:Tx to Asteroid who post a link in Linuxman ISS thread with beautiful shots, I'm now in front of little problem. Have a look: true shot versus a BMNG texture + some Mie scattering settings following (after the pict) within Celestia:

Blue.jpg


The mie scattering settings I'm using for the above screen shot: (settings from Fridger if I'm not wrong)

Code: Select all

Mie                    0.0050
MieAsymmetry    -0.35
Rayleigh            [ 0.0008121 0.0020775 0.00375 ]
Absorption            [ 0.00057 0.0004 0.0 ]
MieScaleHeight   15


Now, what kind of setting could give a result similar to the above shot from ISS?
I'm conscientious my screen is probably not at the right angle/distance/time but the difference is so huge that I don't think it's so important at this point. No need to say I never saw such blue under whatever circumstances within Celestia.

Christophe,

I hope you are using the OGL2 rendering path!? Moreover, I don't have to repeat that Celestia's atmosphere is still in a poor rendering state...

Still it seems to me that it is not as bad as you pictured it above. I also don't find linuxman's image particularly "natural". It's mainly brighter... Mie scattering is not mainly a matter of brightness! Rather it is concerned with atmospheric scattering of light. So the comparison images you show are really NOT specific.

Fridger
Image

Topic author
ElChristou
Developer
Posts: 3776
Joined: 04.02.2005
With us: 19 years 9 months

Re: Mie scattering setting?

Post #3by ElChristou » 12.04.2009, 00:03

Ok, I thought the scattering of light had something to do with the final brightness it's why I was asking...
Image


Return to “Help Central”