Project "Celestia Origin", release dated December 30, 2017

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Gurren Lagann
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Post #201by Gurren Lagann » 14.04.2018, 20:19

OMG MY DREAM HAS CAME TRUE! You even got the shape correct!

Also love that you can see z8 GND 5296 in the background, completely separated from every other galaxy. I really love your project.

EDIT: I wonder if you put at its actual distance (32 billion ly), Celestia 1.6.1 supports distances up to between 3-6 trillion ly.

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Art Blos M
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Post #202by Art Blos » 15.04.2018, 17:45

Gurren Lagann wrote:I wonder if you put at its actual distance (32 billion ly), Celestia 1.6.1 supports distances up to between 3-6 trillion ly.
Here used light distance (13,4 billion ly), otherwise Celestia incorrectly calculates the apparent magnitude.
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Post #203by Art Blos » 16.04.2018, 16:50

Added a better quality model for "Mir".
New Mir.png
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Post #204by Art Blos » 16.04.2018, 16:52

Added a better quality model for "Ulysses".
New Ulysses.png
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Post #205by Art Blos » 16.04.2018, 16:53

Added a better quality model for "Deep Space 1".
New Deep Space 1.png
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Post #206by Art Blos » 16.04.2018, 16:54

Added a better quality model for "Dawn".
New Dawn.png
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Gurren Lagann
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Post #207by Gurren Lagann » 16.04.2018, 17:34

Art Blos wrote:
Gurren Lagann wrote:I wonder if you put at its actual distance (32 billion ly), Celestia 1.6.1 supports distances up to between 3-6 trillion ly.
Here used light distance (13,4 billion ly), otherwise Celestia incorrectly calculates the apparent magnitude.
That explains why my GN-z11 was super dim (+42 apparent magnitude).

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Post #208by Burbach » 17.04.2018, 15:25

Why do you think the incorrect calculations happen, Art? Can this be fixed?

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Art Blos M
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Post #209by Art Blos » 19.04.2018, 19:39

Burbach wrote:Why do you think the incorrect calculations happen, Art? Can this be fixed?
This is property of Celestia. Personally, I can not fix it.
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Post #210by Art Blos » 19.04.2018, 19:44

Added exclusive telescope "TESS".
TESS.png
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Post #211by Janus » 19.04.2018, 20:01

@Burbach & @Art Blos

Had some time to kill while a compile crawls toward eventual completion.

The only place I can quickly find calculations for distance visibility of stars are these.
I hope this helps.
The formula can be changed and recompiled quite easily if needed.


src\celengine\astro.cpp

Code: Select all


// Return the apparent magnitude of a star with lum times solar
// luminosity viewed at lyrs light years
float astro::lumToAppMag(float lum, float lyrs)
{
    return absToAppMag(lumToAbsMag(lum), lyrs);
}


src\celengine\astro.h

Code: Select all


    template<class T> T absToAppMag(T absMag, T lyrs)
    {
        return (T) (absMag - 5 + 5 * log10(lyrs / LY_PER_PARSEC));
    }

    template<class T> T appToAbsMag(T appMag, T lyrs)
    {
        return (T) (appMag + 5 - 5 * log10(lyrs / LY_PER_PARSEC));
    }


Good luck.


Janus.

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Art Blos M
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Post #212by Art Blos » 20.04.2018, 21:10

Rotation periods were found for 9 spacecrafts.
9 spacecrafts.png
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Post #213by Art Blos » 22.04.2018, 08:31

Added "Mariner 10".
Mariner 10.png
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Post #214by Goofy » 22.04.2018, 10:30

Hi Art Bios.
Is there any estimated date for the next release?
Thank you for all your work, very appreciated.
Bye.
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Post #215by Art Blos » 22.04.2018, 10:42

Goofy wrote:s there any estimated date for the next release?
As planned, April 30, 2018. :wink:
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Post #216by Goofy » 22.04.2018, 15:06

Wow, I missed this... thank you, bye soon.
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Post #217by Art Blos » 23.04.2018, 15:06

Added 4K- and 8K-textures for Titan with lakes.
Titan surface.png
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Post #218by Art Blos » 23.04.2018, 15:08

Added 4K- and 8K-specular textures for Titan.
Titan specular.png
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Post #219by Art Blos » 23.04.2018, 15:10

Added new 4K-clouds for Mars.
Mars clouds.png
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Post #220by FarGetaNik » 23.04.2018, 20:12

Nice, I was waiting for a proper titan specular texture and th Mariner 10 spacecraft. Do you have a complete trajectory? There is a data segment avalible online that only shows the mercury flybys but not the transfer from Earth.


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