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Mercury Flyby 2
elakdawalla
post Nov 20 2008, 05:50 PM
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And here's a map of the new names. --E
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peter59
post Apr 15 2009, 07:44 PM
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Raw images available.
http://pds-imaging.jpl.nasa.gov/data/messenger/msgrmds_1001/
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I wish you a pleasant evening with beautiful pictures.


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ugordan
post Apr 15 2009, 08:38 PM
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Thanks for the heads-up, Peter. This is sweet.
Here's the calibrated version of 4 MESSENGER single-frame-global-color views of Mercury so far:



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elakdawalla
post Apr 16 2009, 01:20 AM
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Yes, Peter, thanks for the heads up! And awesome images, Gordan.

Hmm. Anybody have any idea what the difference between the three volumes is? There's one called MDIS, one called msgrmds_1001, and one called msgrmds_2001, and they all seem to contain the same files.

--Emily


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nprev
post Apr 16 2009, 01:40 AM
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Eye-popping work as usual, Gordan!

That is really an intriguing little world, isn't it? Still can't believe how different it looks from MESSENGER than it did from Mariner 10; what a difference 30+ years in technological progress makes!


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Juramike
post Apr 30 2009, 08:20 PM
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QUOTE (Juramike @ Oct 6 2008, 06:09 PM) *
Combination of Phil Stooke's image and my image of the Southern Basin:
Attached Image


Compare also with image seen here in Phil Stookes post (this thread, post#100) here (Oct 9, 2008).

The Southern Basin is the 700 km impact crater Rembrandt.

space.com article: http://www.space.com/scienceastronomy/0904...cury-globe.html
space.com picture in today's article:
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scalbers
post May 3 2009, 10:30 PM
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QUOTE (ugordan @ Apr 15 2009, 08:38 PM) *
Thanks for the heads-up, Peter. This is sweet.
Here's the calibrated version of 4 MESSENGER single-frame-global-color views of Mercury so far:



Very nice Gordan. I may try this in my map (e.g. the lower right one). Out of curiosity do you have any comment on the way your colors compare with the various versions of PIA11364?

http://photojournal.jpl.nasa.gov/catalog/PIA11364

Is there a question per chance of whether the color saturation gets increased when one does contrast stretching? I know we discussed the color of Mercury in some past posts - if I could find them.

Thanks,

Steve
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ugordan
post May 4 2009, 08:34 AM
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QUOTE (scalbers @ May 4 2009, 12:30 AM) *
Is there a question per chance of whether the color saturation gets increased when one does contrast stretching? I know we discussed the color of Mercury in some past posts - if I could find them.

Yes, I said it earlier in some of the other posts. The composites shown here were not gamma corrected for the computer screen, making them contrast-enhanced and the colors are too exaggerated. I personally prefer gamma-correct stuff, though it appears I'm in a minority here as that washes down albedo differences and color, making the images less pleasing to others (though making them closer to actual appearance).

I did produce two gamma corrected global views from flyby 1 and written a short image advisory in the description explaining the reasoning.

A few notes here: even our Moon appears brownish when calibrated this way, and in fact a lot of digital camera images taken from the International Space Station & Shuttle show it brownish while it appears perfectly gray to us down here. I don't know how to explain it, other than it's a psychological thing and automatic "white balancing" in the human eye. This also suggests if you actually stared at Mercury for a while, it'd start to appear gray as well. Unless you held a piece of white paper in front of you for comparison I guess. It is more coppery-brownish than the Moon, but not terribly so. Its albedo markings are also weaker than lunar ones.

Color is really subjective depending on viewing conditions and we could go on discussing it for ages, but it's OT here so I'll just stop my rant here.


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scalbers
post May 5 2009, 07:59 PM
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Yes, maybe a thread on Mercury's color would be an idea to consider. Meanwhile I noticed this Earth-based image showing a conjunction with the Moon and Venus that almost shows a hint of brown color in Mercury (compared with Venus)?

http://www.possumobservatory.co.nz/moon_ve...-800asa-web.jpg

http://www.possumobservatory.co.nz/latest_...-continuing.htm

Steve
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peter59
post Jul 1 2009, 08:56 AM
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Flyby Visualization Tools update.
Mercury Flyby 2, Planned and Actual Images
http://messenger.jhuapl.edu/the_mission/visualization.html


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Greg Hullender
post Jul 1 2009, 06:17 PM
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Strictly speaking, I think we're expecting some tools for Flyby 3 now, since it's just a bit over one Mercury-year away.

--Greg
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elakdawalla
post Sep 2 2009, 04:02 PM
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Has anybody out there assembled any of the outbound NAC mosaics from Flyby 2? I'm in need of a high-resolution version of the Mercury-looks-like-a-giant-watermelon view.

--Emily


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Hungry4info
post Sep 3 2009, 02:54 AM
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I second that request.
I have a 8,145 by 9,305 px, 6.2 Mb global mosaic from the first flyby, and have been itching for one from the second flyby as well.


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elakdawalla
post Sep 3 2009, 04:15 AM
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I know they exist. I asked politely to see if the mission would release one, but they said no and that I could go make my own from the data in the PDS. Public engagement fail.

--Emily


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nprev
post Sep 3 2009, 04:31 AM
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Huh. That was a puzzling response by them, esp. considering your stature in the planetary science community.


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