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Hayabusa2 MINERVA-II-1 operation, 20-21 September 2018
pandaneko
post Sep 27 2018, 10:04 AM
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I have watched the latest press briefing. This time, there were not many surprising things, excpet perhaps that both rovers are
healthy and tha they do one hop each day (in the morning). Temp. range is from about -20 o +30. The camera angle is 125 degrees along
the diagonal of the pictures that we see.

JAXA showed a short movie made from 15 frames. OCN-W1 and OCN-T both found either rovers or their cover, as shining objects, but
they are still unsure what they actually are. They are found near N6.

Most of the press briefing was spent on MASCOT and MASCOT operation will be starting from 30 September to 4 October including
preperation. Actually, they even, during rover operation, started preperation for preperation for MASCOT.

P
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pandaneko
post Sep 27 2018, 10:08 AM
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With so many small rock pieces with no sign of sands I am already pessimistic about sampler horn catching any form Ryugu surface.

These rock pieces seem very hard even for high speed bullets!

P
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Guest_mcmcmc_*
post Sep 27 2018, 10:25 AM
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Official page with images and video is out!
http://www.hayabusa2.jaxa.jp/en/topics/20180927e_MNRV/
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Explorer1
post Sep 27 2018, 12:53 PM
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Incredible images, wow! I would like to see these images too:
QUOTE
OCN-W1 and OCN-T both found either rovers or their cover, as shining objects, but
they are still unsure what they actually are. They are found near N6.



If they keep bouncing, how far will they go? Hopefully not interfering with the other landers! Plus, it would complicate any attempts to map each hop, as if it weren't hard enough! Good luck Phil!

Highest res image, from 64 metres away, is here: http://www.hayabusa2.jaxa.jp/en/topics/20180927e_HighestRes/
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Paolo
post Sep 27 2018, 06:03 PM
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I guess there is a corollary to Murphy's law: your asteroid rover can land in infinite^3 attitudes, but the camera will end facing the sun
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jch
post Sep 27 2018, 06:16 PM
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http://www.hayabusa2.jaxa.jp/en/topics/201...es/img/fig2.jpg
http://www.hayabusa2.jaxa.jp/en/topics/201..._0404_scale.jpg

http://www.hayabusa2.jaxa.jp/en/topics/201...180923-0946.jpg
http://www.hayabusa2.jaxa.jp/en/topics/201...180923-1010.jpg
http://www.hayabusa2.jaxa.jp/en/topics/201...180923-0943.jpg

...and this gem:

http://www.hayabusa2.jaxa.jp/en/topics/201...sol07_movie.mov
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Guest_mcmcmc_*
post Sep 27 2018, 06:57 PM
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QUOTE (Explorer1 @ Sep 27 2018, 12:53 PM) *
Incredible images, wow! I would like to see these images too:

Page 19: http://fanfun.jaxa.jp/jaxatv/files/20180927_hayabusa2_e.pdf
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Explorer1
post Sep 27 2018, 07:58 PM
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Thank you! Can't wait for more images! I wonder how long the rovers will last; perhaps when MASCOT lands too?
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Guest_mcmcmc_*
post Sep 27 2018, 09:08 PM
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QUOTE (Explorer1 @ Sep 27 2018, 07:58 PM) *
Thank you! Can't wait for more images! I wonder how long the rovers will last; perhaps when MASCOT lands too?

They have solar panels, they are in full sunlight, and MASCOT is coming within less than a week, so I'm quite sure they'll all live together on Ryugu for a while.
But MASCOT will land on the opposite side, per schedule.
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Phil Stooke
post Sep 27 2018, 10:13 PM
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Here's a 'new' image synthesized from the frames of the movie. I masked out the sun glare on each frame and merged them.

In answer to mcmcmc's comment above about expecting 15 frames rather than 7 - that was a subset of the frames. There actually were 15 in the full video.

Phil

Attached Image


--------------------
... because the Solar System ain't gonna map itself.
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Explorer1
post Sep 28 2018, 01:09 AM
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Wonderful work! I wonder what they would look like if the 'fisheye' view was corrected (like the Venera surface views, though not as extreme)?
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Guest_mcmcmc_*
post Sep 28 2018, 07:38 AM
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Is anybody able to figure out how to use Hugin panorama viewer/stitcher to convert a 125° fisheye to an equirectangular projection?
There are also an ImageMagick plugin and NASA G.Projector to play with. huh.gif

Others to try:
Cube2DM
PTGui
Re:lens
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climber
post Sep 28 2018, 08:45 AM
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QUOTE (mcmcmc @ Sep 28 2018, 09:38 AM) *
Is anybody able to figure out how to use Hugin panorama viewer/stitcher to convert a 125° fisheye to an equirectangular projection?
There are also an ImageMagick plugin and NASA G.Projector to play with. huh.gif


Wondering if this from John Major is what you’re asking for:
https://twitter.com/jpmajor/status/1045358522781847552?s=21


--------------------
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Guest_mcmcmc_*
post Sep 28 2018, 09:25 AM
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QUOTE (climber @ Sep 28 2018, 08:45 AM) *
Wondering if this from John Major is what you’re asking for:
https://twitter.com/jpmajor/status/1045358522781847552?s=21

I don't know, he doesn't provide any processing details, I'll try asking.
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pandaneko
post Sep 28 2018, 02:45 PM
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QUOTE (Explorer1 @ Sep 28 2018, 04:58 AM) *
Thank you! Can't wait for more images! I wonder how long the rovers will last; perhaps when MASCOT lands too?



I think somebody said something about rover hopping on this forum. I also have read something about it. Apparently, they are
programmed to hop out of darkness automatically. So, they do one hopping each morning and if they fall into a shade they will
automatically hop again.

If they find themselves yet again in a shade, presumably they will hop again. If then again they land in a shade their battery power may
be running out already and presumably they will die there, I think.

They are perhaps like sunlight hoppers.

P
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