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Milky Way Galaxy
show user profile  cbflex
I'm working on creating a Milky Way Galaxy which you can flythrough. I intend on using the setup also as a template, where I can make more different unique galaxies with ease...

This is what I have so far, would love feedback on what I can do to improve it.







I want it to kinda look like this.

I noticed mine is far different. I feel like mine has a lot more stars, less color variation in the stars, and less or total lack of some of that red gas in between the blue gas. I also noticed that the blue lines where the stars and matter are, should be more transparant and less noisy.

read 936 times
1/22/2015 2:44:34 AM (last edit: 1/22/2015 2:46:40 AM)
show user profile  Mr_Stabby
The photos you see of galaxies aren't in true color but rather a mashup of some kind, for example each channel representing the abundance of a different element or each channel representing a wave range (like xray, infrared, visible light). In true color, galaxies look rather black & white. The lowest estimate of how many stars there are in the milky way is around 50 billion, the stars you got are about the size of giant nebulae :p

IMO, the only reasonable way to generate a realistic galaxy flythrough with cg would be procedurally generated stars and dust that adhere to some grand structure (as real galaxies get their shape from dark matter wells and spin), I'm not sure max is up to this as its more of a mathematical challenge than a visual effects one.

EDIT: just came across this:http://www.spacetelescope.org/images/heic1502a/zoomable/
that would be a piece of the andromeda galaxy, note that the smallest stars distinguishable in that image are relatively speaking still pretty huge (some 20 times bigger than our sun) and the bigger splotches are either nebulae, quasars or supernovas.

read 912 times
1/22/2015 5:12:01 AM (last edit: 1/22/2015 6:02:03 AM)
show user profile  FX
FumeFX and Krakatoa always come to mind for galaxies, don't really know how you would implement them in real time, maybe rendered out onto transparent layers ?....depends how your constructing it, wish I had the time to play around and master this technique....looks cool









read 894 times
1/22/2015 7:58:11 AM (last edit: 1/22/2015 8:06:48 AM)
show user profile  Mr_Stabby
also just remembered, this one passed through this forum a while ago -http://en.spaceengine.org/


read 885 times
1/22/2015 8:21:23 AM (last edit: 1/22/2015 8:21:23 AM)
show user profile  Sir_Manfred
The Doppler effect changes the appearance of color on the stars as they are moving towards/away from the observer.




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http://www.Freds3D.com

read 868 times
1/22/2015 10:33:45 AM (last edit: 1/22/2015 10:33:45 AM)
show user profile  cbflex
My problem with using Space Engine, is that it's not my creation. I wouldn't be able to manipulate things, create my own worlds, explosions, and design my galaxies however I want...


Can you explain what you mean by the dopler effect changing the color of the stars?
read 824 times
1/22/2015 7:50:40 PM (last edit: 1/22/2015 7:50:40 PM)
show user profile  Nik Clark
He means red shift, I think.
http://en.wikipedia.org/wiki/Redshift






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read 821 times
1/22/2015 7:56:42 PM (last edit: 1/22/2015 7:57:23 PM)
show user profile  Dr_Jim
I notice a phenomena sometimes whereby when Nik is closer to me he appears larger....and when he is very, very far from me he is much smaller.
It's quite perplexing.
read 810 times
1/22/2015 9:01:04 PM (last edit: 1/22/2015 9:01:04 PM)
show user profile  Nik Clark
Jim, looking at me in your mirrors is bound to cause confusion.



This informative video might help:






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read 806 times
1/22/2015 9:15:07 PM (last edit: 1/22/2015 9:15:07 PM)
show user profile  Sir_Manfred
I mean this:http://en.wikipedia.org/wiki/Relativistic_Doppler_effect



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http://www.Freds3D.com

read 796 times
1/22/2015 10:18:27 PM (last edit: 1/22/2015 10:18:27 PM)
show user profile  cbflex
That's really quite fascinating. I never knew of such an optical effect.

It's almost like saying, the faster the observer moves, the more light he catches in his eyes, thus objects can get more saturated...

So... with all this being said, what can I do to my current piece to improve it?

It's a combination of Afterburn, Vray Environment Fog, and about 20,,000 suspended sphere particles.

Afterburn was used to make the light blue gas where the stars lay. It was also used to make those little red puffs that I added for more variety.

Vray environment fog was used as the background fog in between the light blue vortex, to make it seem like there's still stuff in between the light blue lines, just like in the photos.
read 789 times
1/22/2015 11:32:56 PM (last edit: 1/22/2015 11:32:56 PM)
show user profile  Garp
The doppler effect is something you see (or rather hear) all the time. If you're standing on the side of a road, the sound of the engine of a vehicle coming towards you has a higher pitch than when the vehicle goes away from you.




read 783 times
1/23/2015 1:24:20 AM (last edit: 1/23/2015 1:24:20 AM)
show user profile  digs
prolly best to take this one slow (pretty big undertaking)

- your particles are the same size in render. observing a galaxy, u will most likely never see the same sized star - this is because of extreme distances between stars, and the differences in how powerful they r (how fast they r moving, etc etc.). u need to find a way to show this size difference. keep in mind max (or any commercial program) isn't designed for calculating these scales, so as the artist, u need to show it

- your galaxy looks like a circle. Galaxies revolve around unbelievably strong "gravity wells" - super massive black holes - everything in the galaxy is pulled towards the center. think of a wirl-pool, try to emulate a wirl-pool (so your (smoke fx) etc. should FEEL like they are being influenced by the center )

things going good: your particles are banding: these particles will be ideal for generating fluids, as they will be more dense here. Unfortunately, your particles feel uniformly dense... nothing in the universe is or ever was uniformly distributed.

Like stabby said - this is more of a mathematical problem... but if u want to solo this galaxy creation as an artist, u'll need to obsess on some details. its still one i want to fully tackle ; )
read 760 times
1/23/2015 7:18:07 AM (last edit: 1/23/2015 7:28:34 AM)
show user profile  Dr_Jim
I am not even going to comment from a reality based point of view.
I think its crazy what you may be trying to do. One of the largest problems I see is that you are limited to 1 pixel as your smallest size element. And at the size and scale you are looking at, you are asking the computer to calculate a ridiculous amount of data that you wont even see onscreen unless you 'move the camera' ridiculous distances to get close enough so these stars scale to even 1 pixel in size.

To make something really cool?: Watch this>: It might help

https://vimeo.com/74184382
read 744 times
1/23/2015 1:18:59 PM (last edit: 1/23/2015 1:18:59 PM)
show user profile  S. Silard
And in meantime, go have some read about Milky Way's two arms, as it has no more than that: http://www.iflscience.com/space/immense-spiral-arm-could-encircle-entire-milky-way

Even if this looks like a speculation. This is based on evidence, and science, I'm all good if you do any galaxy, but what you created is more like Andromeda, and if you call it Milky Way, than make it look like as we believe it is.

On the other hand, a galxy contains of 200–400 billion stars. So you did not made an overkill with the numbers of it, but with size and intensity you did. Milky Way's Diameter is 100 000 – 120 000 Light year, one light year is 9.4607×10^15 meter .
Our Sun's Radius is 696 342±65 km that's 109 times bigger than Earth's. One light years is the distance that light travels under one year, the light of our sun reaches us around under 8.3 minutes , based on earth's current distance from sun. And that is what we call 1 AU (Astronomical Unit). The light's speed is around 300*10^6 m/s, that's 1080 million km/h. That's insanely fast.

So basically the other stars like ours make the galaxies look like there are made up from dust. Did you saw the new Image of Andromeda made by Hubble?
Take a look:


Do your research, before a project! No offense.


Congrats, you found my signature.

read 729 times
1/23/2015 4:16:02 PM (last edit: 1/23/2015 4:20:27 PM)
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