Rev 206 and T103 Options

[titanicrivers]

Rev 206 and T103 http://www.ciclops.org/view/7901/Rev206?js=1
T103 is another approach to the southern sub-Saturn hemisphere. An interesting area visible in the approaching T103 images is the region of Chusuk Planitia http://planetarynames.wr.usgs.gov/Feature/...AFF85346635F19C This area was imaged by VIMS in one of its highest resolution views of Titan’s surface (500m/pixel). An important paper in Icarus by Jaumann et al http://www.barnesos.net/publications/paper...on.on.Titan.pdf analyzed the VIMS spectral properties of the star shaped Bohai Sinus and adjacent Chusuk Planitia regions concluding that fluvial mechanisms and particle size/composition were responsible for the complex but systematic spectral changes noted. This paper was discussed before in this forum http://www.unmannedspaceflight.com/index.php?showtopic=4724 although not all had access to all figures and text. Since its publication there have been two equatorial storms (April 2008 http://www.unmannedspaceflight.com/index.p...c=6146&st=0 and Sept 2010 http://www.unmannedspaceflight.com/index.p...t&p=164604) and a SAR topo map http://web.mit.edu/perron/www/files/Aharonson13.pdf that lend support to the paper’s conclusion. The Chusuk Planitia region is under consideration for future missions to Titan 's surface. http://solarsystem.nasa.gov/docs/pr344.pdf

EDIT: a new link to a more readable version of the Jaumann paper has now been inserted above.

[titanicrivers]

The T103 flyby 'Mission Overview' http://saturn.jpl.nasa.gov/mission/flybys/titan20140720/ is now up on the Cassini website.

[titanicrivers]

Many NAC and WAC raw images from the T103 flyby have come down. 6 of the 8 inbound global mapping ISS images are roughly placed on the Looking Ahead Titan image below.

[titanicrivers]

T 103 ISS images of Titan’s north polar region taken on 7-21-2014 reveal Kraken mare’s full extent. The figure below combines N00226702 and N00226698 and the figure from Rev 206 Looking Ahead and is enhanced to show the north polar seas.

[scalbers]

Just curious how the basemaps are doing nowadays. The looking ahead depiction looks nice for the north polar region. What global image mosaic was used for the looking ahead (if it is available)?

[titanicrivers]

Not certain where or if the Titan map files that are used in Looking Ahead are available. The Celestia Program 1.6.1 (I think thats still the latest version available) is used to create the images for Looking Ahead but the graphic map for Titan is not the one that is available with that program. My presumption is that Jason Perry (Volcanopele or VP) updates a custom map of Titan from calibrated and carefully processed ISS images and uses that in the Celestia program to produce the Looking Ahead graphics. Perhaps VP or John VV http://www.unmannedspaceflight.com/index.p...st&p=209464 can comment on this.

[JohnVV]

I do need to update my map
it also is not 100% scientifically accurate
i remove seems and clean up the image

I guess i could take a break from the 65535x32768 mercury map

as i recall the cyclops map is the JPL one
http://www.ciclops.org/view/6924/Map-of-Titan---April-2011
or the one colored by : Dr. Fridger Schrempp
http://www.celestialmatters.org/?q=node/56

also the default titan texture in the SVN 5229 ( basically 1.7.0 )

CODE

svn checkout svn://svn.code.sf.net/p/celestia/code/ celestia-code

is the old 2006 map

[t_oner]

Here is a cosmetically fixed version of the Ciclops map, if someone wishes to add the new images.

Attached thumbnail(s)

 

[t_oner]

Couple of renders.

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[titanicrivers]

Terrific render T_oner !!! Can one load that into Celestia and use it with the program?

[JohnVV]

here is a "cleaned up" 4096 x 2048 ( -180 to 180 ) sepia toned map
the CYCLOPS 2011 map
https://drive.google.com/file/d/0B6ZYAd08tZ...dit?usp=sharing

some of the missing area in the north was added from the radar data

a 1024x512 preview


for those that do not know already
The program Celestia uses images that have zero longitude in the center

CODE

      +90 north
-180 W to 0 to +180 E
      -90 south

and there is a tutorial for using "SPICE" for the orbits and spacecraft trajectories
http://forum.celestialmatters.org/viewforum.php?f=18
that whole section is on using the NAIF SPICE kernels

[t_oner]

Thanks for the map John, (wish you had released it a day earlier which would have saved me 2 hours fixing the cosmetic defects ).

Here is another version with the SAR data, I plan to add the Hisar images.

Attached thumbnail(s)