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PostPosted: Mon, 25-03-13, 15:20 GMT 
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Inspired by the pictures above, I just made this model, hidden on the other side of our Milky Way (of, course. It's a fictious nebula !) :

Image

A close-up :
Image


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PostPosted: Thu, 28-03-13, 7:40 GMT 
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i like the second one .
Though it looks a bit too blue ,it almost looks like a Hubble image

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PostPosted: Mon, 01-04-13, 14:52 GMT 
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Not exactly an irregular nebula, but I think it's a beautifull model anyway. Look like a real picture :

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PostPosted: Thu, 04-04-13, 21:17 GMT 
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This one now looks like a real nebula (well, almost) :

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PostPosted: Sat, 06-04-13, 2:19 GMT 
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Cham wrote:
Not exactly an irregular nebula, but I think it's a beautifull model anyway. Look like a real picture :


Indeed, it looks like the Rosette Nebula.


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PostPosted: Tue, 21-01-14, 16:45 GMT 
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This morning, I decided to go back on Orion-like nebulae modelisation. I made a quick run of the previous Mathematica code and got this one :
Attachment:
Neb1.jpg
Neb1.jpg [ 178.1 KiB | Viewed 2896 times ]

Attachment:
Neb2.jpg
Neb2.jpg [ 231.61 KiB | Viewed 2896 times ]

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PostPosted: Tue, 21-01-14, 18:34 GMT 
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... and a new one with 1000 stars. Placed in the middle of galaxy M33 :

Attachment:
M33Ma.jpg
M33Ma.jpg [ 228.71 KiB | Viewed 2890 times ]

Attachment:
M33Mb.jpg
M33Mb.jpg [ 210.31 KiB | Viewed 2890 times ]

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PostPosted: Tue, 21-01-14, 19:16 GMT 
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M33 is becoming crowded of 3D nebulae. It's amazing to move inside, and encounter all the models.
I'm pleased that there's virtually NO impact on frame rate on my "old" Mac mini 2010 with just 4GB of ram :

Attachment:
M33_1.jpg
M33_1.jpg [ 190.61 KiB | Viewed 2885 times ]

Attachment:
M33_2.jpg
M33_2.jpg [ 198.1 KiB | Viewed 2885 times ]

Attachment:
M33_3.jpg
M33_3.jpg [ 196.57 KiB | Viewed 2885 times ]


EDIT : Here's a 2min30sec video showing M33 with some of its nebulae models :
http://fsgregs.startlogic.com/Public_Fi ... s/M33b.mov

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PostPosted: Tue, 21-01-14, 21:08 GMT 
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It's now very easy to compose some very nice views, directly in Celestia.
Several nebulae at once, like what we can see on real pictures :

Attachment:
Nebs1.jpg
Nebs1.jpg [ 182.76 KiB | Viewed 2880 times ]

Attachment:
Nebs2.jpg
Nebs2.jpg [ 180.57 KiB | Viewed 2880 times ]

Attachment:
Nebs3.jpg
Nebs3.jpg [ 135.58 KiB | Viewed 2880 times ]


EDIT : And 3 or 5 nebulae in the same view (using the zoom feature of Celestia) :
Attachment:
3Nebs.jpg
3Nebs.jpg [ 161.49 KiB | Viewed 2879 times ]

Attachment:
5Nebs.jpg
5Nebs.jpg [ 108.89 KiB | Viewed 2879 times ]

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PostPosted: Wed, 22-01-14, 16:23 GMT 
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Adding more Orion-like nebulae in the Andromeda galaxy :
Attachment:
AndD1.jpg
AndD1.jpg [ 212.32 KiB | Viewed 2854 times ]

Attachment:
AndD2.jpg
AndD2.jpg [ 224.37 KiB | Viewed 2854 times ]


The view is spectacular from some alien worlds (using the FOV feature of Celestia) :
Attachment:
And3.jpg
And3.jpg [ 226.14 KiB | Viewed 2854 times ]

Attachment:
And4.jpg
And4.jpg [ 240.87 KiB | Viewed 2854 times ]

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PostPosted: Wed, 22-01-14, 18:55 GMT 
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Neb3 is my favorite one. That kind of shape is the most realist one, imho. It looks like the Pelican nebula.

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PostPosted: Sat, 25-01-14, 0:26 GMT 
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I love this view ! :D

Attachment:
Blue.jpg
Blue.jpg [ 126.92 KiB | Viewed 2835 times ]


Maybe I should load my 2 millions stars database in the Andromeda galaxy.

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PostPosted: Sat, 25-01-14, 18:44 GMT 
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Since the stars are working in M81, I added a global highly detailled nebula to the whole galaxy (the default galaxy rendering is turned OFF in the pictures below) :
Attachment:
M81A.jpg
M81A.jpg [ 202.56 KiB | Viewed 2812 times ]


Some views from inside M81 :
Attachment:
M81B.jpg
M81B.jpg [ 203.29 KiB | Viewed 2812 times ]


I'm still surprised at how smooth is the frame rate, considering the massive sprites model

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PostPosted: Mon, 27-01-14, 6:57 GMT 
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Hello,Cham! You have done a great work,the results are great! On behalf of Russian Celestia users I'm glad to say that we are delighted with your irregular nebulae models! We very hope that in the near future will be able to download and try in Celestia your models nebula.

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PostPosted: Mon, 27-01-14, 14:30 GMT 
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Alexell wrote:
We very hope that in the near future will be able to download and try in Celestia your models nebula.


I'm still hesitating in publishing my irregular nebulea models yet, because there's a rendering bug in Celestia 1.6.1 : The sprites are wrongly rendered at a large distance, so the sprites models are useless in Celestia 1.6.1 (in the case of nebulae, defined as DSC objects). That bug has been solved by Chris Laurel a long time ago and Celestia 1.7.0 source code contains a fix. Strangely, the fix is OFF by default in the source code. Turning it ON solves the issue.

If you're on a Mac (OS X), I could give you my own version of Celestia 1.7.0, which is fully 64bit and which also solves several other bugs in Celestia. That special version is VASTLY superior to Celestia 1.6.1 8) .

For the moment, you can download the stellar distributions for 5 spiral galaxies (M31, M33, NGC 300, NGC 404, and M81), that I've published there :
http://216.231.48.101/forum/viewtopic.p ... fa21151b08

These STC files should work without problems with Celestia 1.6.1.

I may publish the nebulae and their stars later.

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