New Cassini Jupiter maps

[selden]

Frank,

The "4k" Cassini map is 3601x1801, so it needs to be resized for use with Celestia. It's also slightly offset in longitude compared to the textures included with Celestia.

It's available at
http://photojournal.jpl.nasa.gov/catalog/PIA07782

If you're going to resize it, start from the TIF image that's linked in the upper part of the page. It doesn't have any borders.

[t00fri]

Frank,

The "4k" Cassini map is 3601x1801, so it needs to be resized for use with Celestia. It's also slightly offset in longitude compared to the textures included with Celestia.
...

...which just means presumably that the Red Spot has moved a bit meanwhile, which it always does...

Or do you have used a different "fixed" reference point to compare the longitudinal offsets? I doubt there are any.

Bye Fridger

[selden]

Fridger,

As you surmised, I was just comparing the location of the Red Spot. The difference is about 1/2 its diameter.

[t00fri]

Fridger,

As you surmised, I was just comparing the location of the Red Spot. The difference is about 1/2 its diameter.

Which means that the map should NOT be offset in longitude. It's just illustrating that Jupi's visible appearance is not stationary in time.

Bye Fridger

[selden]

I was under the impression that the SSC parameters were taking the motion of the Red Spot into account.

[t00fri]

I was under the impression that the SSC parameters were taking the motion of the Red Spot into account.

Indeed the frame used by our ssc parameters is the one which (empirically) minimizes the red spot movement, but certainly it does not eliminate it completely. Since I did very extensive precision testing of the red spot position in Celestia relative to real photos some years ago, I have a fair feeling what amount of residual movement can be expected over several years.

Bye Fridger

[TheStressPuppy]

I made my own texture using the tiff version of the Cassini map. Resized it to 4k. It is a great improvement over the default texture (not to knock whoever created the default texture which is good in itself). I tried the moving clouds add-on but IMO it didnt make it look as good so i removed it. I made a normal map as well following what don did using the red channel, but i cant work with anything higher than 4k with the nvidia tools (gf6000gt) IMO 4k looks good enough. The clouds may have a little too much relief in them. I was going a little more artistic than realistc here. Views from Io and Europa look awsome. May try to do an 8k bump map insted later on. Heres my results from an average user with an average puter

These were taken in the default Fov. Which according to the docs is supposedly how the human eye would see things.

[/img]

[fsgregs]

Please post a link to download the 4k texture, if you can. Thanks

Frank

[TheStressPuppy]

There is no need to. Since the map is on the web. Save the .tiff image from the Planetary Photojournal site.

EDIT: updated link to borderless image. http://photojournal.jpl.nasa.gov/catalog/PIA07782

Resize it to 4096x2048 in any image editing program like photoshop, paint shop pro, or irfran view (a free image viewer that can save in other formats). Then re-save as a Jupiter.jpg, png, or dds. Put the file in your Textures\Hi Res folder, then enjoy the view (use Shift+R to make Celestia load hi res textures. lower case r to switch back to med res).

[bh]

That looks super...I like the cloud relief...quite visible at the terminator, very nice.

[fsgregs]

Stress Puppy:

I downloaded the image from the Cyclops link above, and it had a significant border with blue lines and with a complete latitude/longitude grid about it. I suppose I could crop the image, but it would not then have a smooth seam.

Could you check the link? Is there another one you used?

Thanks

Frank

[Johaen]

Stress Puppy:

I downloaded the image from the Cyclops link above, and it had a significant border with blue lines and with a complete latitude/longitude grid about it. I suppose I could crop the image, but it would not then have a smooth seam.

Could you check the link? Is there another one you used?

Thanks

Frank

Use this one: http://ciclops.org/view_media.php?id=9877. I used Gimpshop to crop and resize the image.

[TheStressPuppy]

Sorry, my mistake. I posted the wrong link. The Ciclops images all have borders, and i forgot about the Planetary Photojournal image. Which is the same map without the borders. Here is the correct link http://photojournal.jpl.nasa.gov/catalog/PIA07782 Download the tiff version of the file.