And here is the next body to get a makeover: Saturn's moon Hyperion. This one was quite a challenge. Hyperion is an irregularly shaped "potato" of a rock, a fact that, erm, hasn't been very well represented in the current default Orbiter installation :lol:. I found some low-res shape models, but no good texture maps except a very coarse one by Phil Stooke that seems to pre-date the Cassini data (and was used for the current Orbiter 2016 release version).
So I decided to generate my own texture map by projecting the available raw Cassini images onto the shape model. The problem here was that the camera position in the model frame wasn't known, so I had to infer the position by rotating the model and mapping its silhouette onto the image. For the iconic front view that went fairly well, but some of the other views required a bit of imagination, not least because the shape model is less than perfect. Also, some areas are not covered at all. Instead of leaving them blank, I used some artistic license and mapped random image bits into them.
The colour balance was adjusted to roughly correspond to some images I found claiming to be "true colour".
The textures are fairly low-res, so I didn't bother putting them on the high-res texture archive. They will be inserted directly in a future release package. If you want to try them, I've attached them to this post. Note that this also contains a replacement Config\Hyperion.cfg to refer to the new textures.
Please be aware that this update only addresses the moon's appearance, not its orbital and spin characteristics. Hyperion's orbit is severely perturbed by Titan, and its spin goes through chaotic phases, so modelling those will be an entirely different challenge. Be my guest!
Let me know of any issues.
So I decided to generate my own texture map by projecting the available raw Cassini images onto the shape model. The problem here was that the camera position in the model frame wasn't known, so I had to infer the position by rotating the model and mapping its silhouette onto the image. For the iconic front view that went fairly well, but some of the other views required a bit of imagination, not least because the shape model is less than perfect. Also, some areas are not covered at all. Instead of leaving them blank, I used some artistic license and mapped random image bits into them.
The colour balance was adjusted to roughly correspond to some images I found claiming to be "true colour".
The textures are fairly low-res, so I didn't bother putting them on the high-res texture archive. They will be inserted directly in a future release package. If you want to try them, I've attached them to this post. Note that this also contains a replacement Config\Hyperion.cfg to refer to the new textures.
Please be aware that this update only addresses the moon's appearance, not its orbital and spin characteristics. Hyperion's orbit is severely perturbed by Titan, and its spin goes through chaotic phases, so modelling those will be an entirely different challenge. Be my guest!
Let me know of any issues.