QUB2PNG, Playing with Cassini VIMS cubes |
QUB2PNG, Playing with Cassini VIMS cubes |
Nov 9 2007, 12:59 AM
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
I've made some progress with the IR channel on VIMS, have managed to do partial calibration of the cubes. It's still buggy, but at least it's something. Here's a couple of rough results, all using R=5um, G=2um, B=1.26um.
In case of Saturn the green and blue channels were scaled up to match the intense thermal radiation. The cubes were flatfielded, quantum efficiency corrected and divided by solar spectrum, though I don't know if all the steps were carried out correctly. Dark current subtraction remains to be done - it's possibly the reason why the lower left Titan insets have banding in the red channel. I'm actually pretty satisfied with the way these two turned out, they are reminiscent of official VIMS surface composites, including the "blue" material. Hopefully I'll be able to put something out to convert cubes to PNGs before long. A better solution would be a GUI but that's the tedious part for me. -------------------- |
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Jan 10 2008, 10:45 PM
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IMG to PNG GOD Group: Moderator Posts: 2250 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
This is slightly off-topic but has anyone been able to download the TIFFs on the January 1, 2008 VIMS PDS data volumes? I'm getting "430 Forbidden" when using Wget and errors too when using IE or Firefox. I get the impression that something is wrong on PDS' end. I was able to download everything else.
The TIFFs are highly useful for figuring out which QUBs you want to convert to PNGs. |
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