Juno PDS data Options

[elakdawalla]

There is now PDS-format JunoCam cruise and Earth flyby data available; it's been submitted to the PDS, but MSSS has gone ahead and posted it on their website. I've created an index page to it here. Unlike my usual index pages, there aren't any thumbnails because of the odd nature of JunoCam images, with their long skinny shapes and interleaved framelets. I haven't played much with these data because it's a bit beyond my skill -- I look forward to seeing what any of you can do with it.

[Gerald]

Somehow, I get the feeling, that with almost each post another frame of reference is introduced implicitely, and mixed with the frames already mentioned before.
So, a first step to define what everyone is talking about would be an unambiguous definition of the frame(s) of reference you are refering to.

I'm usually working with the two frames of reference that define either the lower left, or the upper left pixel of the CCD as (0;0), and that are using the horizontal offset between two consecutive pixels as the unit of length.
Other translational options that seem to be discussed here are defining pixel row 600 as 0 for y, but column 0 as 0 for x, or different from that, defining y=600 as the y-position of the optical axis, both with two y-flipped versions.

So, just discussing constants without sufficient context regarding the applied frame of reference will always result in confusion.

The rotation matrix of the camera frame with respect to the Juno frame is yet another question, as well as Juno's rotation axis with repect to the Juno frame, and handled outside JunoCam's instrument kernel.

I'm going to analyse JunoCam's geometry during the next three months, hopefully to subpixel accuracy, but hesitate to discuss the lots of dead-ends.
Especially, I'll review whether the Brownian distortion model is applicable to JunoCam at all on this level of accuracy, and develop and check a set of alternative families of geometrical distortion models.
I'm planning to discuss this on EPSC in September as a part of a talk. But I don't intend to release much intermediate material before, except the according EPSC abstract.
If the investigation will result in any new insight, I may consider to write an according peer-reviewed paper, and in this case of course provide data for a refined instrument kernel.