Realistic red supergiant texture and model

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nussun
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Realistic red supergiant texture and model

Post #1by nussun » 26.06.2020, 15:43

This addon contains a model and texture for red supergiants. It works best with true-colors enabled. I made this using Cinema 4D. (Thanks to Gurren Lagann for teaching me how)

There is a small rendering issue, but i don't know how to fix that right now. I will post a fixed version if i can.

I tried to make it as realistic as possible with the colors and everything.
I hope you'll like it :)

Red supergiant.zip
(3.4 MiB) Downloaded 183 times


A preview image of what it looks like:
unknown (2).png
I like Red Supergiants, Luminous Blue Variables, Large stars, and much more!

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trappistplanets
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Post #2by trappistplanets » 26.06.2020, 18:45

nice!

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jujuapapa
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Post #3by jujuapapa » 27.06.2020, 04:54

Good work !

it looks like a balloon that deflates... :wink:
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trappistplanets
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Post #4by trappistplanets » 28.06.2020, 12:47

jujuapapa wrote:it looks like a balloon that deflates...
lol

Eric Nelson
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Post #5by Eric Nelson » 05.06.2021, 00:07

It's a perfect model for such, I use it in Celestia Origin and modified the largest stars section in the "special stars" folder to have them, though the large_magellanic_cloud file in the stars_ouside_our_milky_way folder also replaces stars like WOH G 64, so I also modified that to render such stars with the model and texture.
I also use "red-supergiant.png" texture which I found in the extragalactic_stars_extras.zip file from SevenSpheres via https://celestia.space/forum/viewtopic.php?f=23&t=19978&p=152350&hilit=extragalactic+stars#p152350 as a texture for red supergiants like Mu Cephei, NML Cygni, the LGGS stars (which I made an addon of and with their rotation periods rendered to 30360 hours to prevent periods of an unrealistic 1.3 Earth days), and such as they appear to be cooler and calmer based on the data while the others seem to show more violent activity which the RSG.png texture fits with.
The yellow-hypergiant.png texture's being used for G and K class supergiants/hypergiants (even though the RSG.cmod mesh's still being rendered). https://celestia.space/forum/viewtopic.php?f=6&t=20398&p=153995&hilit=red+supergiant#p153995
Too bad there are only so many red supergiants (though nowhere near as many as main sequence stars or red dwarfs) and the mesh and texture has only been used for a tiny fraction of all the supergiants out there.

Supergiants or hypergiants of any color are apparently unstable (yet diffuse) and can't retain quite a spherical shape like smaller stars do as they're nearing the end of their lives when the helium and stuff is burning.
Yet somehow stars like R136A1 are so massive and dense that they're rendered apparently spherical (although standard Celestia bodies of any class without meshes are really geodesic polyhedrons with resolution increased to such when zoomed in as to appear spherical).
Last edited by Eric Nelson on 04.08.2021, 07:26, edited 3 times in total.

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Anthony_B_Russo10
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Post #6by Anthony_B_Russo10 » 05.06.2021, 08:07

Eric Nelson,

As a fair piece of advice since you are new, please don't necropost. But at least here you brought something relevant to the thread's content so I will give leniency here.
Anthony B. Russo, I like Pluto. Mod of the Celestia subreddit: https://www.reddit.com/r/Celestiasoftware/
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Post #7by Eric Nelson » 05.06.2021, 14:22

This was my 1st year on here ever and I wanted to discuss those who were interested in such topic and many were wondering how the star Stephenson 2-18 would be rendered and I did my best to render it with the best coordinates and magnitude.
Thanks for the feedback though.

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CM1215 M
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Post #8by CM1215 » 05.06.2021, 14:31

Eric Nelson wrote:This was my 1st year on here ever and I wanted to discuss those who were interested in such topic and many were wondering how the star Stephenson 2-18 would be rendered and I did my best to render it with the best coordinates and magnitude.
If you wanted to do that, you could've made a new topic instead of resurrecting an older one that really doesn't seem to have anything to do with what you were posting about (apart from the fact that both discuss something relating to stars).
CM1215: Celestial master in learning.

Eric Nelson
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Post #9by Eric Nelson » 05.06.2021, 14:33

It had to do with the use of such and what such files it would also work on, but I'll follow that advice.
Thanks for it all.

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Post #10by CM1215 » 05.06.2021, 14:35

Eric Nelson wrote:It had to do with the use of such and what such files it would also work on, but I'll follow that advice.
Thanks! I apologize, because upon reading your post more, you did use the model and texture from this thread, so your post is more relevant than I thought.
CM1215: Celestial master in learning.

Eric Nelson
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Post #11by Eric Nelson » 05.06.2021, 15:49

Yup, and like I said, it's realistic though unfortunately (just like in reality) there are so many stars (even giants and supergiants) and the amount of stars everyone used this model and other giant star models in is only a tiny, TINY fraction of even the giants and super/hypergiant stars for even the amount of such on Celestia in general.

Yet like I said, the RSG.png texture's used on hot and violently active red supergiants while the red-supergiant.png is used on such stars that appear to be not only cooler but calmer, as stars with bright and dark areas seem to represent more violent and hotter stellar activity, and the mesh looks good for both red super giants and the hypergiants of any color.

Eric Nelson
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Post #12by Eric Nelson » 26.07.2021, 02:21

nussun wrote:This addon contains a model and texture for red supergiants. It works best with true-colors enabled. I made this using Cinema 4D. (Thanks to Gurren Lagann for teaching me how)

There is a small rendering issue, but i don't know how to fix that right now. I will post a fixed version if i can.

I tried to make it as realistic as possible with the colors and everything.
I hope you'll like it :)

Red supergiant.zip

A preview image of what it looks like:
unknown (2).png

Now 1 thing that hasn't been in mind yet was the fact that when using Celestia Origin, the mono star textures are in dds format.


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