New Horizons Jupiter Encounter Options

[tedstryk]

In principle, this would depend upon the sensitivity of the photosensitive substrate, which can vary for two cameras with the same (clear or otherwise) filter.

I wonder if the Pioneer cameras were intrinsically more sensitive to blues, making the GRS stand out as a much darker feature than in Voyager, etc. images. Alternately, the GRS may have changes in the intervening few years. Given the fact that all features appear to be a bit different in Pioneer vs. Voyager images, I suspect that this is a case of what's behind the clear filters not being the same.

The red spot is known from groundbased observations to have become much fainter between Voyager and Pioneer. The fact that Pioneer had no real green image and had a true red channel (not orange) may also have a lot to do with it.

[Bjorn Jonsson]

The GRS is known to exhibit a stronger red color when the South Equatorial Belt is whitish (Pioneer images) than when it is brownish (Voyager images) so this is probably the main reason for its different appearance in the Pioneer and Voyager images.

[volcanopele]

Here is an animated gif covering the time period from 2007-01-21 19:42:01 UTC to 2007-01-22 05:42:01 UTC. The moon moving from right to left at the beginning of the animation is Callisto. Io makes a cameo appearance at the end of the movie.

http://pirlwww.lpl.arizona.edu/~perry/New_...21-22_movie.gif

[volcanopele]

Attached are two views of Io taken last week by New Horizons. For each image, I have magnified the image by 1000%, using bicubic (top view) and Nearest-Neighbor (bottom view) interpolation. For each image, I included a simulated view from the Solar System Simulator. Large scale features such Bosphorus Regio and Colchis Regio are starting to come into view, along with the non-sense surrounding Isum Patera.

Attached thumbnail(s)

 

[Guest_Sunspot_*]

We need an Io orbiter... if it were technically possible that is.

[elakdawalla]

I don't think you'll see volcanopele arguing with that suggestion.

--Emily

[Decepticon]

Oh Ya? We need a Europa orbiter!

[NMRguy]

Cameras on spacecraft often have to trade off between spatial and spectral resolution, and LORRI and Ralph are no exception. The incoming photos have all been from LORRI with its superior long range capabilities. But as we approach Jupiter, can we expect any “combination image products” from New Horizons in the same vein as HiRISE/CRISM on MRO or ISS/VIMS from Cassini, or are the focusing conditions and fields of view too disparate?

http://crism.jhuapl.edu/gallery/featuredIm...e20061213_2.php
http://ciclops.org/view.php?id=1111

[elakdawalla]

It seems it should be possible to combine LORRI detail images with MVIC color. MVIC's field of view is 20 times broader than LORRI's, but its CCD is almost 5 times broader, so in fact MVIC's resolution is only four times coarser than LORRI's, which is not bad.

To get a handle on when targets are going to be observed by both MVIC and LORRI, you can check out the New Horizons Jupiter encounter timeline I'm working on. It's based on John's spreadsheet. It's not done yet -- I need to add much more in the way of explanation, and I'm going to put in some illustrations of NH's position at the start of each day (thanks for the suggestion Doug) -- but I figure you guys won't mind seeing the work in progress.

--Emily

[ustrax]

but I figure you guys won't mind seeing the work in progress.

In what concerns me I don't mind AT ALL!

Great work Emily!

[volcanopele]

Cool, I wonder if it is even worth it to try to see if I can find Callirrhoe in the Jan. 10 images....

[Stu]

CLOSING IN

Far behind now: blue-white world,
Waterworld, world of feathered clouds and
Oceans deep, steep, snow-capped mountains
And deserts of powdered amber.
Ahead, above, beneath, all around: blackness,
Ebony abyss studded with sequin stars
Bisected by mottled vapour trail – the
Sun-frothed spine of the Milky Way.

A year of nothing. Waiting. Watching
The dark get darker as Earth’s glow
Slowly fades o’er my shoulder.

And then…

Ahead: a glint of gold.
A yellow grain among the dust.

It grows.

A yellow peppercorn now, how bright
It seems against the void.

It grows…

A butterscotch-hued bead now,
Sewn onto the star-embroidered cloak
Of night…

What a sight suddenly! A marble
Now, dipped in caramel
With toffee whirls and honey swirls
Streaked across its face.

I rush on silently, imagining
Stars streaking past in Enterprise style,
Hearing the solar wind howling in my ears
As I close in on –

A tiger-striped ball now, fat with cloud,
Bloated and branded with auburn bands
And strands of coffee-coloured haze
Dotted with cinnamon spots –

And still it grows…


© Stuart Atkinson 2007

[Phil Stooke]

Emily's blog-in-progress:

"Blah Blah..."

Hmm, now I know what my students feel like...

This is really useful - what a great encounter! And in case people don't know about this, here is one of the goals of the Europa terminator mapping - extending the map of these 'crop circles':

http://www.lpi.usra.edu/meetings/lpsc2005/pdf/2081.pdf

Phil

[djellison]

Blah Blah is so much better than the random Latin text that egomaniac typesetters and marketing experts use

Doug

[elakdawalla]

Lorem ipsum isn't actually truly sensible Latin, though it's based on Latin. If I'd felt like taking the time I could even have used the online Lorem Ipsum generator at lipsum.com.

Hope to have a major update done on this in a couple of hours...

--Emily