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ExoMars
djellison
post Oct 22 2009, 07:06 AM
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ExoMars is accelerating into the future, remember. THe 2004 plan was for a 2009 launch. Since then it has slid 9 years, in 5 years.
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nprev
post Oct 22 2009, 07:23 AM
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True. That's why I think the best solution might be to freeze the config ASAP & start bending metal. The best that could probably happen is that it'd be ready for 2016, not 2018, and that 'early' delivery would be all good from a project management standpoint if 2018 was the firm target.


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vjkane
post Oct 25 2009, 04:40 PM
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I've posted a long blog entry on the question of the two rover strategy on my blog at http://futureplanets.blogspot.com/2009/10/...mars-rover.html

Your comments and criticisms welcome.


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Paolo
post Dec 14 2009, 06:30 PM
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The 2016 ExoMars Orbiter instrument definition team final report
http://salmon.larc.nasa.gov/PDF_FILES/2016...eport_final.pdf
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mps
post Dec 22 2009, 06:23 PM
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about 2016 orbiter and EDL demonstrator: http://sci.esa.int/science-e/www/object/in...fobjectid=46124
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Drkskywxlt
post Aug 4 2010, 04:20 PM
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http://www.parabolicarc.com/2010/08/03/nas...xomars-orbiter/

Instruments for the 2016 orbiter have been selected. I saw one quote saying that MATMOS could detect the presence of 3 cows on Mars laugh.gif Does anyone know if an occultation spectrometer can differentiate isotopes, e.g., C14 vs. C12? I haven't seen it mentioned. That would be big for strengthening the biology vs. geology argument. They're also (appearing) to refly Mars Climate Sounder, which will really extend the climatology baseline (despite the probable end of MRO-start of ExoMars gap) and let apples to apples type comparisons.
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volcanopele
post Aug 4 2010, 06:40 PM
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One of those instruments is the HiSCI camera, which will be run by the same group as HiRISE biggrin.gif cool.gif The camera will allow for near-simultaneous stereo through the use of a yaw rotation drive. The camera will image a target shortly before it flies over it, then again when it does. The resolution is a bit lower than HiRISE's at 2 meters per pixel, as opposed to 0.3 meters. But the entire swath (8.5 km wide) will be covered in four colors, as opposed to a narrow swath in the middle.


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Hungry4info
post Aug 4 2010, 06:45 PM
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What's the possibility of a global map at 2 m/px resolution?


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djellison
post Aug 4 2010, 07:17 PM
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2m/pixel = 250,000 per sq Km.

4 color channels plus 2 stereo channels (guessing here ) at 8 bit depth ( assuming a 12 bit to 8 bit LUT ) and 2:1 compression ( about what is done for HiRISE I think )

Those 250000 pixels over six channels become 1.5 megapixels - at 8 bits becomes 12 megabits compressed to 6 megabits. Per Sq Km

Approx 145 million sq km on Mars. Which means 870,000 gigabits or 870 terrabits of data.

At an optimistic average of say, 2 megabits per second - 5034 days of continuous downlink.

Make you own call on that one.

Alternatively - consider it this way. CTX on MRO is 6m/pixel and single channel. So it's 1/9th the number of pixels and 1/6th the number of channels - so 1/54th the amount of data per sqKM and in 3 years they've managed something over half the planet.



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volcanopele
post Aug 4 2010, 07:23 PM
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laugh.gif Well, it won't be with HiSCI. The current planned coverage rate is 2% of the surface each year, rather than a fraction of 1% as currently obtained with HiRISE.


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Gsnorgathon
post Aug 4 2010, 08:26 PM
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QUOTE (djellison @ Aug 4 2010, 11:17 AM) *
Approx 145 million sq km on Mars. Which means 870,000 gigabits or 870 terrabits of data.

Wouldn't those be areobits instead of terrabits? <ducks />
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djellison
post Aug 4 2010, 08:35 PM
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rolleyes.gif
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Hungry4info
post Aug 5 2010, 12:41 AM
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Alright, thanks. I understand. smile.gif


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nprev
post Aug 5 2010, 01:29 AM
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Been awhile since we had a truly atrocious pun on UMSF; I was getting worried. Congrats, Gsnorg! biggrin.gif


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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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Gsnorgathon
post Aug 5 2010, 08:32 PM
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Aww, shucks! It was my pleasure.
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