Forgotten NEAR, NEAR, Mathilde and Eros |
Forgotten NEAR, NEAR, Mathilde and Eros |
Nov 29 2009, 09:50 PM
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#1
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
First specialized asteroid mission and NEARly forgotten one. And first landing on asteroid!
So it's time to change it. First image is Mathilde in enhanced colors from 450, 550 and 700 nm filters. Second is artificially colorised high resolution mosaic (116 m/pix). -------------------- |
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Dec 1 2009, 11:09 AM
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#2
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
Mathilde stereo pair and contrast enhanced artificially colorised image of Mathilde.
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Dec 2 2009, 07:04 PM
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#3
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Junior Member Group: Members Posts: 55 Joined: 1-May 06 From: Cincinnati, Ohio Member No.: 758 |
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Dec 11 2009, 12:03 PM
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#4
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
My first mosaic of Eros.
It's from raw data and because I haven't got calibration data yet, it isn't perfect. But still it's maybe highest resolution color mosaic of Eros available (Eros is really forgotten object). Correction: I use wrong date (product creation time)! So now it's correct. I'm sorry. -------------------- |
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Dec 11 2009, 12:18 PM
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#5
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Solar System Cartographer Group: Members Posts: 10164 Joined: 5-April 05 From: Canada Member No.: 227 |
Very nice! We had a thread on here until a year ago about Eros, so it's not totally forgotten, but there's a lot more that could be done with the images.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Dec 11 2009, 08:28 PM
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#6
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
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Dec 11 2009, 10:41 PM
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#7
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Senior Member Group: Members Posts: 1431 Joined: 26-July 08 Member No.: 4270 |
Wow, tedstyrk, thanks for that link!
-------------------- -- Hungry4info (Sirius_Alpha)
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Dec 11 2009, 10:47 PM
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#8
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
YEARS and years ago - probably 3, 4 maybe years before UMSF - I did some mosaics of NEAR images that made it to space.com Probably my first 'public' stitching work
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Dec 12 2009, 12:08 AM
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#9
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
You existed pre-UMSF?
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Dec 12 2009, 09:15 AM
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#10
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
Bingo - Feb 2001
http://www.space.com/missionlaunches/missi...ics_010228.html Are they the first 'bootleg postcards' in the specialist press? |
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Dec 12 2009, 10:06 AM
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#11
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Merciless Robot Group: Admin Posts: 8784 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Wow. So technically you were "born" in the year 3 BU...and here it is, almost 6 AU already!
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Dec 12 2009, 11:00 AM
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#12
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
9 years? You think I'd have learnt to grow up by now
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Dec 12 2009, 01:13 PM
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#13
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
Spaceviews and Space.com had used some of my Soviet work at the time, but that is all I can think of.
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Dec 12 2009, 02:11 PM
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#14
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
Wonderfull site, thanks for the link Ted Stryk. I already bookmark this page.
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Dec 12 2009, 05:06 PM
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#15
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Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
<O.T.> Long before "Photoshop" became a verb, like 1997 or so, some images I created were circulated among reporters I knew from work, and a reporter from USA Today eventually got his hands on them and did a small segment that they called "Altered Reality" or something like that. I was going to make a wildlife calendar of absurd scenes, like the annual migration of Mono Lake penguins returning to California's high desert. A couple of those were printed and I probably have that story in a box somewhere. I really should get around to doing that project now that we have high res SLRs and tools we didn't have back then. </O.T.>
-------------------- If Occam had heard my theory, things would be very different now.
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Dec 21 2009, 07:35 AM
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#16
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
Mosaic from end of the mission.
Color is slightly brownish, but entirely artificial. -------------------- |
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Dec 21 2009, 07:45 AM
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#17
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Merciless Robot Group: Admin Posts: 8784 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
...WOW!!! Thanks, Machi!!!
It's amazing how mosaics really bring out the character of a region on a world in a way that single frames just can't. To me, the vast majority of those 'craters' look like collapse pits of some sort. This implies a dusty, not-very-dense regolith subject to mass-wasting events, which sort of makes sense given the very low gravitation (& also probably similar to the surface of comets, albeit with different regolith materials.) If that conjecture is true, then the obvious question is how did Eros hang onto this loose coating after billions of years of impacts that doubtless shook the hell out of it many, many times? Is the dust self-generated, perhaps by repeated thermal cycles as the asteroid rotates? -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Dec 21 2009, 11:32 AM
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#18
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Senior Member Group: Members Posts: 1431 Joined: 26-July 08 Member No.: 4270 |
Wow, that's pretty neat.
What is the scale resolution of the final frame? I always wondered how far NEAR was from Eros when that image was taken, how long before landing it was, and how large those rocks were. -------------------- -- Hungry4info (Sirius_Alpha)
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Dec 21 2009, 12:57 PM
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#19
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
Final resolution is 1.2 cm/pix. Altitude was around 125 meters. All images are resampled to same resolution as final image.
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Dec 22 2009, 02:35 AM
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#20
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Senior Member Group: Members Posts: 1431 Joined: 26-July 08 Member No.: 4270 |
Ah, interesting. Thanks. =)
Of curiosity, why were there no images taken (?) after landing? Camera not pointed at Eros? Eros would have been out of focus? -------------------- -- Hungry4info (Sirius_Alpha)
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Dec 22 2009, 02:59 AM
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#21
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
I believe the camera was under the spacecraft.
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Dec 22 2009, 03:20 AM
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#22
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Member Group: Members Posts: 227 Joined: 13-October 09 From: Olympus Mons Member No.: 4972 |
I believe the camera was under the spacecraft. The camera definitly had to be or else the spacecraft wouldnt be able to image its last moment before landing. unless it was spining around on landing which it wasnt. One thing that is weird is why didnt they try to contact NEAR or try to make it image the surface if possible after landing and if that image had anything in it it would be worth more than a 1000 words about the asteroid. The image would describe the composition and strangeness of its surface. -------------------- "Thats no moon... IT'S A TRAP!"
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Dec 22 2009, 09:16 AM
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#23
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Merciless Robot Group: Admin Posts: 8784 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
I believe that the HGA was also occluded upon landing; they lost contact with NEAR at that very moment.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Dec 22 2009, 09:46 AM
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#24
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
They communicated via the LGA for about a month, returning gamma ray data from the surface.
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Dec 22 2009, 10:30 AM
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#25
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Merciless Robot Group: Admin Posts: 8784 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Ah! Forgot that, Ted, thanks!
You're awake at odd hours lately...bet I know why!!! (It helps to remind yourself that it's not forever, man; been there!) -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Dec 22 2009, 03:20 PM
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#26
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Junior Member Group: Members Posts: 76 Joined: 26-May 04 Member No.: 77 |
Re-launching NEAR off of Eros was briefly considered!
http://www.space.com/missionlaunches/missi...nch_010212.html Also, if memory serves, an attempt at re-contact was made some months later with no success. |
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Dec 24 2009, 04:21 AM
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#27
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Junior Member Group: Members Posts: 55 Joined: 1-May 06 From: Cincinnati, Ohio Member No.: 758 |
or try to make it image the surface if possible after landing and if that image had anything in it it would be worth more than a 1000 words about the asteroid. The attached diagram shows that the MSI (multi-spectral imager) was bore sighted with the other instruments 180 degrees away from the LVA (large velocity adjustment thruster). NEAR-SHOEMAKER was dropped gently onto the surface with the LVA pointing up. That would put the MSI into the surface or very close to it depending upon plowing of the surface during landing. I don't know what the focal length of the MSI was, but the lens would have been WAY tro close to the surface to take a focused image. And this quote about the landed attitude from a team member: "From what I've heard, the XGRS instrument is pointed down. We're on the tips of the arrays, with a 15 - 20 degree roll. The two bottom panels are splayed forward, with the two upper panels in their normal positions. The best guess is a 17 degree angle of the main body from horizontal. However, attempts to reconcile the DSAD data (they’re mounted on the solar array hinge arms) with the amount of power being generated have failed. We might be on a slope, the aft end may be on a rock, or the hinge mounts, arms and/or panels might be bent. " |
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Jul 22 2018, 04:15 PM
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#28
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Member Group: Members Posts: 306 Joined: 4-October 14 Member No.: 7273 |
Apologies for the thread necromancy, but I recently reprocessed a few imaging mosaics from the early and mid orbital phases around Eros.
NEAR-Shoemaker - Eros NEAR-Shoemaker - Eros NEAR-Shoemaker - Eros NEAR-Shoemaker - Eros Hopefully will have some time to put together more soon! |
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