Posts by VikingTechJPL

by VikingTechJPL
24.09.2013, 18:24
Forum: Celestia Users
Topic: Space Art
Replies: 35
Views: 15944

Re: Space Art

Thanks, A. I used Celestia's default FOV (about 32 degrees) so the view's geometry should be reasonably authentic. Yes, the rings do get pretty thin near Saturn's equator. And, as you suggested, they spread out but also get more and more hidden by your horizon as you go toward the poles. I used Cele...
by VikingTechJPL
23.09.2013, 17:23
Forum: Celestia Users
Topic: Space Art
Replies: 35
Views: 15944

Re: Space Art

View from Saturn's upper clouds:

Saturn View from Upper Cloud..jpg

Tools used: Celestia and Photoshop.
by VikingTechJPL
18.09.2013, 17:03
Forum: Physics and Astronomy
Topic: Is the Universe "Flat"?
Replies: 2
Views: 1975

Is the Universe "Flat"?

Here's one of the best short videos I've seen regarding whether the Universe is "flat" or "curved".

http://www.wimp.com/universeflat/

Interesting indeed! Enjoy!
by VikingTechJPL
01.08.2013, 01:38
Forum: Celestia Users
Topic: New Version?
Replies: 18
Views: 4591

Re: New Version?

After a period of "the doldrums" so to speak in the development of Celestia itself, Fridger decided to work himself on a newer more scientifically-robust version called CelestiaSci. Two other developers (dirkpitt and ElChristou) have now joined him. You can find out more on this page on th...
by VikingTechJPL
01.08.2013, 00:35
Forum: Celestia Users
Topic: Space Art
Replies: 35
Views: 15944

Re: Space Art

PlutonianEmpire Wrote: ". . . if perhaps the intent to exclude Celestia entirely from space art images might be better, and/or also to push greater creativity/originality, the OP could be amended with a clarification of the rules of the thread?" PlutonianEmpire, Indiviual threads do not h...
by VikingTechJPL
31.07.2013, 01:49
Forum: Celestia Users
Topic: Space Art
Replies: 35
Views: 15944

Re: Space Art

Thanks for the link, J V V. Went to the picogen site and was glad to see that it's also available for Windows. Then clicked on the site's link to the deviantart site and found many great examples of what it can do. Old or not, it's a program people are creating some superlative works with. Thanks ag...
by VikingTechJPL
30.07.2013, 22:20
Forum: Celestia Users
Topic: Space Art
Replies: 35
Views: 15944

Re: Space Art

Very nice images!

John V V, what program(s) can you recommend to produce images like your Mars-scape? Is it a 3D object?
by VikingTechJPL
30.07.2013, 15:15
Forum: Celestia Users
Topic: Space Art
Replies: 35
Views: 15944

Re: Space Art

TIME: The Indefinite Future SUBJECT: Celestia version 4.0 CAPTION: In what future historians would refer to as "Celestia's Renaissance Years", a new resurgence of development has taken advantage of emerging holo-beam technologies to project 3D objects viewable in true 3D, appropriately nic...
by VikingTechJPL
29.07.2013, 16:23
Forum: Add-on releases
Topic: Pluto's two new moons Kerberos and Styx added to Motherlode
Replies: 4
Views: 2316

Re: Pluto's two new moons Kerberos and Styx added to Motherl

My thanks too, Frank.

Your contributions are always appreciated.

GW
by VikingTechJPL
29.07.2013, 16:17
Forum: Celestia Users
Topic: New Saturn Rings Texture
Replies: 8
Views: 3020

Re: New Saturn Rings Texture

Here's another site that looks like it has data-sets and a lot of other info about Saturn's rings: http://pds-rings.seti.org/saturn/ It's part of NASA's PDS Small Bodies Node: http://pdssbn.astro.umd.edu/index.shtml Loads of info here about the rings of Jupiter, Uranus and Neptune too.
by VikingTechJPL
28.07.2013, 18:11
Forum: Celestia Users
Topic: New Saturn Rings Texture
Replies: 8
Views: 3020

Re: New Saturn Rings Texture

Thanks, Lodgy. For anyone interested, the Ciclops site ( http://www.ciclops.org/?js=1 ) definitely has a lot of great material, including loads of photographs that suggest how different Saturn's rings look from many different directions and under many different lighting conditions. As Chris Laurel (...
by VikingTechJPL
27.07.2013, 03:44
Forum: Celestia Users
Topic: New Saturn Rings Texture
Replies: 8
Views: 3020

Re: New Saturn Rings Texture

From the Ciclops site, here are images showing the considerable differences of the natural color mosaics of the illuminated and unilluminated sides of the rings. The top image was taken Nov. 26, 2008 "from 10 degrees below the illuminated (southern) side of the rings ". The bottom image wa...
by VikingTechJPL
26.07.2013, 21:10
Forum: Celestia Users
Topic: New Saturn Rings Texture
Replies: 8
Views: 3020

Re: New Saturn Rings Texture

Fridger, Because I have been quite familiar with the Ciclops data and had taken the time to read it prior to my last post, why do you resort to snide remarks like ". . . If you had taken a little more reading time, . . ."? As is so evident in your own 2007 post ( viewtopic.php?f=2&t=11...
by VikingTechJPL
26.07.2013, 00:22
Forum: Celestia Users
Topic: New Saturn Rings Texture
Replies: 8
Views: 3020

Re: New Saturn Rings Texture

Fridger, Yes, as the article states, the mosaic was based on the "unilluminated" side of the rings. Perhaps a way needs to be devised to assign different parameters to the illuminated and unilluminated sides. Either way, after comparing your photos of your 2007 post with the NASA mosaic, o...
by VikingTechJPL
25.07.2013, 18:07
Forum: Celestia Users
Topic: New Saturn Rings Texture
Replies: 8
Views: 3020

New Saturn Rings Texture

Attached is a new Saturn-rings texture, which I created using the NASA image on this page: http://photojournal.jpl.nasa.gov/catalog/PIA08389 As the page says "This natural color mosaic was acquired by the Cassini spacecraft as it soared 39 degrees above the unilluminated side of the rings."...
by VikingTechJPL
18.07.2013, 16:31
Forum: Petit Bistro Entropy
Topic: Showing moon orbit
Replies: 5
Views: 3734

Re: Showing moon orbit

Here's one of the previous posts about this: http://216.231.48.101/forum/viewtopic.php?f=3&t=11196&start=0 There has been more discussion but I haven't been able to find it yet. As I recall, Chris or Selden once explained that the Moon's orbit is just calculated and drawn at startup time to ...
by VikingTechJPL
25.03.2013, 00:06
Forum: Physics and Astronomy
Topic: Largest Sky Map Revealed: An Animated Flight Through the Uni
Replies: 0
Views: 1494

Largest Sky Map Revealed: An Animated Flight Through the Uni

Here's a beautifully done video with 400.00 galaxies based on data from the Sloan Digital Sky Survey. Enjoy!

http://www.youtube.com/watch?v=rOjrImaPh80&list=UUm4ZAOy6QTnN47cGI8PTnRQ&index=6
by VikingTechJPL
11.01.2013, 18:30
Forum: Physics and Astronomy
Topic: Vela Pulsar Movie
Replies: 0
Views: 1502

Vela Pulsar Movie

Interesting short movie from the Chandra X-ray Observatory:

http://www.youtube.com/watch?v=v55lzMMJTJQ
by VikingTechJPL
08.01.2013, 21:59
Forum: Add-on releases
Topic: Beta Add-On needs testers.
Replies: 18
Views: 7999

Re: Beta Add-On needs testers.

pla879 wrote: 5 times 2 = 10, 40 times two = 80, 800 times 2 = 1600, 1600 times 2 = 3200... To add a few words to Hungry4info's and Andy74's succinct explanations— pla879, yes, you multiplied everything by 2, but your examples start with numbers that are not powers of 2. The numbers 5, 10, 40, 800 ...

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