Using Cassini Raw Images, An Update |
Using Cassini Raw Images, An Update |
Jan 27 2007, 11:47 AM
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Founder Group: Chairman Posts: 14431 Joined: 8-February 04 Member No.: 1 |
Over the past 3 years, we've been fortunate enough to have an ever expanding library of nearly 200,000 images from the Mars Exploration Rovers thrown onto the web as uncalibrated JPG's for enthusiasts like ourselves to get our teeth in to. The success of this is written on the walls of UMSF and elsewhere, and most remarkably, the scientists and engineers involved were pleased to see people getting their hands on 'their' data. Jim Bell even commented on Planetary Radio in November '05 :
"The team really appreciates the public support, and we put the images out there every day on marsrovers.jpl.nasa.gov and people download them and make their own mosaics and panoramas and do their own analysis and we think that's great - it's great to have the public along for the ride" Cassini followed suit and after some trouble getting images that were not overly stretched the workflow was sorted out and amazing images have been making it onto the JPL website ever since. From time to time we've seen some great results - mosaics, colour composites, animation - great work and a fantastic credit to the Cassini team, their policy of putting images online and the example set by MER. However - over the last 18 months or so there have been some rumours and unpleasant undertones regarding Cassini imagery. Some enthusiasts who have created amazing images found that their creations were not universally appreciated. There seemed to be an unspoken 'look but don't touch' policy in place regarding the raw JPG's and thus they stopped working with Cassini imagery or took down bits of their websites and so on. Over the past year or so, the UMSF mod and admin team have been discussing this, and recently we contacted JPL for clarification. Could we find some way to give people the confidence to get creative with the Cassini images as they have with MER images? I want to thank the Cassini outreach team for responding to us so positively and for everyone involved in helping us establish in writing what we all hoped was true, but were perhaps a little unsure of. I'm happy to report that the Cassini images are out there for us to use and enjoy in exactly the same way we do with MER imagery. To confirm that - recently there has been an addition to the text on the Raw Images page saturn.jpl.nasa.gov "Welcome to the Cassini raw image section, where the Cassini mission and Cassini outreach are happy to provide these raw images for the public to use and enjoy. ... " As with MER - if you do something with the Cassini images - you should cite where the data comes from. For MER it has always been NASA/JPL/Cornell and for Cassini it should be NASA/JPL/Space Science Institute. For those of you that may have had concerns or doubts about getting thoroughly stuck in to the Cassini imagery, then you can put those fears aside and get stuck in - to cite a senior Cassini team member: "Our intent in creating the raw image page was to accomplish exactly what Jim Bell said for the MER Project. The public is paying the bill for this, so we should be doing everything we can to help them enjoy the ride" So - crack open your photo editing software and start exploring Saturn! Thanks to Alice and the team at JPL for helping us with this, and personal thanks to the rest of the mod and admin team who, as ever, knew the rights words to say at the right time. Doug |
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Feb 22 2007, 05:21 PM
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Senior Member Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 |
There is really only one example of a Cassini discovery that was self-obvious in the compressed JPGs -- the Enceladan plumes. And y'all will recall that as soon as one of us spotted the plumes in the JPGs, we were immediately told by a member of the imaging team (who posts here) that all we were seeing were lens flare effects. And he didn't retract that opinion until after the imaging team went public with their own conclusion that there really were plumes coming off of Enceladus.
I'm not saying anything except that this coincidence caught my attention at the time, and I still note it in this discussion... -the other Doug -------------------- “The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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Feb 22 2007, 06:29 PM
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
I'm not saying anything except that this coincidence caught my attention at the time, and I still note it in this discussion... -the other Doug Yes, but at this point, anything that obvious isn't likely to show up. Also, with a discovery like that, credit would still clearly go to the Cassini team - it isn't like you could claim to have taken the photo with your telescope or something. Not to mention the fact that one couldn't be entirely sure from the raw image. It was suspicious, but being sure would require knowing how stretched the images were. -------------------- |
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Guest_AlexBlackwell_* |
Feb 22 2007, 06:52 PM
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Guests |
Yes, but at this point, anything that obvious isn't likely to show up. I don't know, Ted. From my point of view, the presumed "scooping" that some seem to fear with ISS raw JPGs doesn't require a lot of expertise. After all, no offense intended, any idiot (or at least one with a smattering of knowledge) can discover a new moon, ring, or, say, plumes off Enceladus without needing a PhD in planetary sciences. Of course, the same could be said about what's going on with, for example, the MER Victoria Crater imagery, (i.e., craters, rocks, sand dunes, etc.). In MER's case, though, Squyres et al. have embraced the public's participation and seem to be pleased with the widespread interest in their mission. They have deservedly reaped the fruits of their very positive public outreach effort. And no one can claim that the MER team hasn't gotten all of the well-deserved credit for their discoveries, notwithstanding the amateurs' efforts here. On the other hand, to be fair, remember that, warranted or not, ISS is the most publicly identifiable instrument on Cassini. And I can sympathize with Dr. Porco to a certain degree here. After all, as far as I know, NASA isn't forcing the other Cassini instrument teams (let alone RADAR and VIMS) to give the public a sneak preview of their data. And as Dr. Porco pointed out earlier in thread via the "mysagan" proxy, the same type of relationship (i.e., cameras vs. "other" instruments) held true for MER as well. EDIT: I guess the main difference in this case is that Jim Bell of Pancam isn't whining that the public gets a sneak preview of his imagery while Gostar Klingelhöfer gets to sit on his Mössbauer spectra. This post has been edited by AlexBlackwell: Feb 22 2007, 07:02 PM |
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