Juno development, launch, and cruise, Including Earth flyby imaging Oct 9 2013 Options

[djellison]

I think I found most of the city features here
http://www.unmannedspaceflight.com/index.p...st&p=203752

[mcaplinger]

I think I found most of the city features here...

Certainly, and I referenced your post, but if you reread it, you'll see that it expressed some hope that more features might appear in parts of the image that hadn't been received at that time. I was hoping that somebody might revisit that (as it turned out I don't think we can see anything you didn't initially.)

[Gerald]

This is a subframe of efb17, cleaned from camera artifacts, and brightened by a factor of eight:

I tend to claim, that efb17 shows (besides artifacts) almost exclusively hits by energetic particles.
It's one of the challenges we've to cope with near Jupiter.

When looking at stars from outside the Van Allen belts some of the features may still be CR or SEP hits.

[Gerald]

On the topic of the nightside images, I'll note that there are a few interesting blobs in efb15 and probably efb16 and no one has ever looked at those in any detail, so there's a chance for a real amateur discovery here. Of course most of those blobs are stars.

Here a first draft of Orion, Canis Major (including Sirius), some more, cleaned and brightened from efb15:


Edit: EFB15 cleaned, brightened, and annotated with labels for features, for which I could find some plausible (to me) identification:

For one bright spot I couldn't find a unique plausible identification. It's marked by a red circle.
If the stars are marked more or less correctly, the object should be far away from the ecliptic; so a planet looks unlikely as an explanation.

-- free to repost --

[Gerald]

Switching between schematic efb14 and efb15 simplifies identification of stars in efb14:

The schematic views have been obtained by appropriate blurring and stretching.

So far, I didn't succeed in identifying features in efb16 the same way.

Determining the position of the Earth in efb15 visually by looking for occulted stars may work to a certain degree.
I'd guess, that the bright, not yet identified feature in efb15 should be a city on Earth.

Edit: The above animated gif combined into one image, as preliminary as it is:

[Gerald]

efb14, 15, and 16 cleaned, amplified, and registered by stars, reduced 8-fold, rgb-combined:

Orion and Sirius turned out to work for registering efb16.

The image may help to determine/confirm phase shift and pointing; radiometric calibration and geometric fine adjustment is tbd.
Especially efb16 still needs to be checked for s/n; it might turn out, that the camera is rather sensitive to blue stars.

Special thanks to Astro0 for the new version of the logo!

[Gerald]

An excerpt (efb15) of some intermediate data reduction step:

The first image is the raw efb15 image cleaned (to some degree) and enhanced 16x, but not adjusted geometrically.
The second and third image are data reduced versions (operating on cleaned, but not on enhanced version). Each "bright" spot is represented by a symbol consisting of a cross for the position and a square for the integrated brightness (edge length roughly proportional to the natural logarithm of the integrated brightness).

Precise (not necessarily accurate) values are contained in the two textfiles  efb15_ModVertHipass_NormalWaveletsCrude_rad4_forw.txt ( 16.1K ) Number of downloads: 252
and  efb15_ModVertHipass_NormalWaveletsCrude_rad4_backw.txt ( 16.05K ) Number of downloads: 266
for spreadsheet import.
Framelets are counted from the bottom of the image to the top. WeightAreaSum is the summed (integrated) brightness of the considered spot. BarycenterX and Y are weighted averages; origin is the lower left corner; so you may need to add a column 10495-BarycenterY to find the symbol corresponding to the data record in the image. SigmaX and Y are root mean square sums of the weighted distances to the BarycenterX resp. Y. As weight of a pixel its grey value is used.
Analysis of a spot is restricted to one framelet and to a square of 16x16 pixels. Sirius extends beyond the 16x16 limitations, and is split in each of the two framelets it occurs.

The analysis method is biased by the order (left-right/up-down) of the analysis; therefore I've provided two runs with opposite bias.

Assigning stars with known properties to several of the spots will be one of the next steps to pin down image geometry, and may be radiometry.

[Candy Hansen]

Gerald, Astro0 and Phil Stooke we plan to highlight your contributions at the AGU Juno press conference

[Candy Hansen]

Sometimes it's too simple: Inferred RGB color for lower margin (of raw image) to remove yellowish-bluish stripes:


free to repost

This is the image we plan to highlight in the press conference if you can send me / Caplinger a .png version

Thanks!
Candy

[Candy Hansen]

Totally fanciful and just for the heck of it. Not scientifically accurate...disclaimer, blah, blah, blah blah, etc, etc....

[attachment=31149:JUNO_flyby.jpg]

This is your image we'd like to highlight - if you'd like this attributed to a name other than Astro0 please let me / Caplinger know. Also, .png would be appreciated.

[Candy Hansen]

Here's a composite of the three frames merged to reduce artifacts, and rotated north-up. Crisium is the most prominent dark spot, with Marginis and Smythii to the right and Fecunditatis on the terminator.

Phil

[attachment=31140:efb01_composite.jpg]

This is the image we plan to highlight and we are using your exact words in the caption. (-: We'll need it in .png if possible. Thanks!

[jasedm]

Congratulations you image wizards, and good luck with the press conference Candy.

[Phil Stooke]

PNG of mine on its way via email.

Now we just have to deal with Jupiter! That's going to be what is sometimes referred to as a blast!

Phil

[0101Morpheus]

I cant seem to find any information if Juno will perform a flyby of any asteroids on the way to Jupiter. I'll take that as there will be no such flyby. Unfortunate.

[Phil Stooke]

No, absolutely not.

Phil