Cassini Raw Images Options

[pat]

Looks like the targeting of Helene was just a tiny bit off (the moon appears at the very edge of the NAC FOV in most of the raws from the latest flyby) - I wonder how much this is due to the moon 'wandering' from it's Lagrange point due to unaccounted-for perturbations by other objects?
It seems a portion of Cassini's time in most of the revolutions include 'orbit determination' images of the rocks - now we can see why this is important.
Perhaps this was why the planned images of Pallene a couple of orbits back didn't materialise...

In this case the problem was with the spacecraft ephemeris used when calculating the camera pointing. There was an OTM between the time the camera pointing was calculated and the time it was uploaded to the spacecraft. The new post OTM ephemeris was only released shortly before the instructions for the sequence were sent to Cassini. The new trajectory was different enough that when combined with the out of date pointing it put Helene near the edge/partially off the NAC frame. The ephemeris for Helene is accurate, it was where it was expected to be -- its Cassini that wasn't where it was expected to be.

A similar situation applied for the Pallene images. On top of that it turned out that Pallene was also in Saturn's shadow at the time the images were taken, something that was overlooked when the observation was planned -- so even if the camera pointing had been updated with the latest spacecraft ephemeris we wouldn't have seen anything.

[volcanopele]

According to the Looking Ahead article for Rev101:

http://ciclops.org/view/5461/Rev_101

That's Beta Crucis (or Mimosa).

[ngunn]

Is it just me? For the last couple of days I haven't been able to view the most recent raw images. The thumbnails are blank except for the image numbers and attempts to open the full res versions are redirected to the site feedback form (which I have completed and sent).

I particularly wanted to see the latest Kraken Mare shots. If anybody does have them could they please post a specimen in a suitable thread?

[jamescanvin]

Not just you - I've been having the same problem.

[Bjorn Jonsson]

And same here - I was hoping to see images from yesterday's flyby of Rhea.

[ugordan]

Works for me, at least from work. At home it's been dead slow ever since they updated the site.

Here's the Jan 31st Titan observation:

[ngunn]

Beautiful! Did you do some processing or is the lake really that clear on the raws?

[ugordan]

I did about the same kind of processing as for previous shots, couldn't find that thread to post it there, though.

Not sure if this'll work for you, but here are direct links to the raw images:
http://saturn.jpl.nasa.gov/multimedia/imag...7/N00128800.jpg
http://saturn.jpl.nasa.gov/multimedia/imag...7/N00128801.jpg
http://saturn.jpl.nasa.gov/multimedia/imag...7/N00128802.jpg
http://saturn.jpl.nasa.gov/multimedia/imag...7/N00128803.jpg

[ngunn]

Not sure if this'll work for you

Nope, but your version will do me just fine in the meantime.

[Stu]

Is it just me? For the last couple of days I haven't been able to view the most recent raw images.

I have to be honest, I'm really not a fan of the new look raw images site or format. It crawls at a snail's pace, and just doesn't seem as effecient to me. It's actually put me off visiting it.

[Juramike]

I had the Cassini-Huygens home as my intitial page when starting up IE.

But the annoyingly slow "loading the player" has forced me to switch to something else.
(Did that drop their view count?)

I did fill out a feedback form. Hopefully if enough people comment, the website will improve.

-Mike

[Phil Stooke]

Change for change's sake. All too common in cyberspace. Want to upgrade a site? Add more content. I use the Cassini site far less now than I did before.

Phil

[ngunn]

Here's the Jan 31st Titan observation:

And here's the earlier Kraken Mare view for comparison:

http://www.unmannedspaceflight.com/index.p...st&id=16065

I notice a small bright spot in the middle of the southerly bay in the new image. Is it real? Gordan (anybody) - does it appear in all three raws?

It's either absent or a lot less prominent in the older image.

Island, cloud or artifact?

[ugordan]

Island, cloud or artifact?

It's a cosmic ray hit.

[ngunn]

It's a cosmic ray hit.

OK but I've just been digging for the original discovery image of the lake and that does appear to have a feature in the same position:
http://www.unmannedspaceflight.com/index.p...ost&id=9505

I wonder if we're talking about the same thing?