Old Pictures from Celestia (locked)

General discussion about Celestia that doesn't fit into other forums.
FaLLeN_SOuL
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Post #101by FaLLeN_SOuL » 08.03.2007, 22:44

t00fri wrote:your galaxies seem way too bright. Did you download a galaxy add-on from the Motherlode?

Bye Fridger

no, only a star database.
the brightnes of the galaxies can also be adjusted with SHIFT+( and SHITF+)

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t00fri
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Post #102by t00fri » 08.03.2007, 23:32

FaLLeN_SOuL wrote:
t00fri wrote:your galaxies seem way too bright. Did you download a galaxy add-on from the Motherlode?

Bye Fridger
no, only a star database.
the brightnes of the galaxies can also be adjusted with SHIFT+( and SHITF+)


OK, why do overexpose the galaxies so much?

Bye Fridger
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Post #103by Johaen » 08.03.2007, 23:39

t00fri wrote:OK, why do overexpose the galaxies so much?


Because it looks cool! :D

I oftentimes do the same.
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FaLLeN_SOuL
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Post #104by FaLLeN_SOuL » 09.03.2007, 01:33

Johaen wrote:
t00fri wrote:OK, why do overexpose the galaxies so much?

Because it looks cool! :D

I oftentimes do the same.

yes, it also looks cool to me. i like it. although i would prefer a rendering of the smc for example like this: http://de.wikipedia.org/wiki/Bild:Small ... _cloud.jpg

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t00fri
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Post #105by t00fri » 09.03.2007, 07:21

FaLLeN_SOuL wrote:
Johaen wrote:
t00fri wrote:OK, why do overexpose the galaxies so much?

Because it looks cool! :D

I oftentimes do the same.
yes, it also looks cool to me. i like it. although i would prefer a rendering of the smc for example like this: http://de.wikipedia.org/wiki/Bild:Small ... _cloud.jpg


This is NOT a natural color view of the SMC galaxy, like most other images released for the public. Their main emphasis is to enhance colors such as to make the universe look more "exciting" ;-)

The released images from the Spitzer infrared telesope are a perfect example of this attitude. I think they have even hired a "space artist" who has to produce these "exploding" colors. All these are false colors and have nothing to do with reality.

In contrast, Celestia attempts to do /scientific/ visualization, notably with naked eye vision as the major rendering guideline. If you have ever looked at a galaxy through a big telescope visually, then you know that galaxy colors are very faint at best. Through amateur telescopes, one can barely perceive any colors.

Bye Fridger
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John Van Vliet
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Post #106by John Van Vliet » 10.03.2007, 21:16

Saturns ring using the new Cassini images
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Image ImageImage

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Post #107by fsgregs » 10.03.2007, 23:55

John:

Where can we get the new Saturn rings?

Frank

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John Van Vliet
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Post #108by John Van Vliet » 11.03.2007, 03:08


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t00fri
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Post #109by t00fri » 11.03.2007, 12:05

john Van Vliet wrote:Saturns ring using the new Cassini images
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Image ImageImage


John,

as was often pointed out, the Cassini imaging mainly provides info about the ring albedo. What is required in addition, are independent hires data about the transparency profile across the rings! Otherwise the rings do NOT represent in any way an accurate display!

In your first image on the left it seems to me that you indeed got a problem with the transparency data...

Bye Fridger
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dallas
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Post #110by dallas » 12.03.2007, 10:43

Image

Image

Image[/img]
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Post #111by eburacum45 » 13.03.2007, 11:11

I think I'll post this one; a 'gravity tug', a model of a NASA concept for moving asteroids to which I have added a little refinement.
In my version, the tug increases its effective mass by filling a flexible container with asteroid material, which it then suspends on a long tether close to the asteroid to lower its effecive centre of gravity and therefore the gravitational attraction betweenn the tug and the asteroid. (I've added a little bit of blue fuzz to represent the motors firing).



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John Van Vliet
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Post #112by John Van Vliet » 18.03.2007, 17:21

Dione (2183_6655_4.tif) and Enceladus (2184_6666_4.tif) from Ciclops
Image Image Image

Dollan
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Post #113by Dollan » 18.03.2007, 18:48

I wasn't going to post any pictures, since there are others who are far better at this than I am. But then I figured... what the heck.

These have all been done in 1.5.0pre2, and with the new atmosphere declarations. I'm slowly getting a handle on those, but there is still a lot to learn. For now, I'm using them to achieve a visual effect, rather than an entirely realistic one.

These are all worlds for my ArcBuilder setting, and are posted on my Flickr account.

http://farm1.static.flickr.com/161/3938 ... dc73_o.png
http://farm1.static.flickr.com/123/3988 ... 9fd4_o.png
http://farm1.static.flickr.com/156/4009 ... 43da_o.png
http://farm1.static.flickr.com/180/4011 ... 5529_o.png
http://farm1.static.flickr.com/156/4202 ... 020e_o.png
http://farm1.static.flickr.com/123/4207 ... c5d6_o.png
http://farm1.static.flickr.com/161/4237 ... fd01_o.png
http://farm1.static.flickr.com/173/4242 ... 5576_o.png

These are links to the largest sizes, each roughly 1mb in size. I'll post more as I create more add-ons, and update old ones.
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Dollan
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Post #114by Dollan » 20.03.2007, 20:32

Here's the latest world for ArcBuilders. Named Phione IV, it orbits Beta COmae Berenices. The main drive behind this world was the use of Fractal Terrains for continental generation. It shows promise, although I still tweaked a few things to give a bit more of a natural look.

http://www.flickr.com/photos/maastrichian/428444792/

I've linked to a different type of page, this time, where you can choose your resolution size and leave comments.
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Dave F
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myPlanets

Post #115by Dave F » 21.03.2007, 20:35

deleted.
Last edited by Dave F on 13.04.2007, 21:34, edited 1 time in total.

Johaen
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Post #116by Johaen » 21.03.2007, 21:22

Dallas, your screenshots are pretty awesome. I especially like the one with the spaceship and the star in the background.
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Post #117by bh » 21.03.2007, 22:52

Nice clouds Dave F.
regards...bh.

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Post #118by buggs_moran » 22.03.2007, 01:21

Johaen wrote:Dallas, your screenshots are pretty awesome. I especially like the one with the spaceship and the star in the background.


Me too. The only problem is every time I see it, the theme to "The Black Hole" starts in my head.
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Dollan
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Re: myPlanets

Post #119by Dollan » 22.03.2007, 02:09

Dave F wrote:I like those Arcbuilder worlds posted by John.


Thanks! Each one was generated a little differently. I'm experimenting with another method right now. With luck, I'll have something to show tomorrow.
"To make an apple pie from scratch, you must first create the universe..."
--Carl Sagan

Dollan
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Post #120by Dollan » 22.03.2007, 18:59

My latest ArcBuilder world:

http://www.flickr.com/photos/maastrichian/430596431/

I used a random select and copy method to create the texture on this one. I'm probably going to take a bit of a break on these worlds; after a while, the Earth-like worlds tend to look alike, and while I still have several to make, per ArcBuilder setting parameters, I also have many non-Gaian worlds that I need to make. I think I'll experiment with those for a while.

...John...
"To make an apple pie from scratch, you must first create the universe..."
--Carl Sagan


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