ExoMars |
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ExoMars |
 Oct 22 2009, 07:06 AM
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#301
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Founder  Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1  |
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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Oct 22 2009, 07:23 AM
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#302
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 Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
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.
-------------------- 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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Oct 25 2009, 04:40 PM
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#303
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Member Group: Members Posts: 706 Joined: 22-April 05 Member No.: 351 |
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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Dec 14 2009, 06:30 PM
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#304
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 Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
The 2016 ExoMars Orbiter instrument definition team final report
http://salmon.larc.nasa.gov/PDF_FILES/2016...eport_final.pdf |
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Dec 22 2009, 06:23 PM
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#305
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Member Group: Members Posts: 118 Joined: 18-November 07 Member No.: 3964 |
about 2016 orbiter and EDL demonstrator: http://sci.esa.int/science-e/www/object/in...fobjectid=46124
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Aug 4 2010, 04:20 PM
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#306
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Member Group: Members Posts: 293 Joined: 29-August 06 From: Columbia, MD Member No.: 1083 |
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  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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Aug 4 2010, 06:40 PM
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#307
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 Senior Member Group: Moderator Posts: 3233 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
One of those instruments is the HiSCI camera, which will be run by the same group as HiRISE
  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.
-------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Aug 4 2010, 06:45 PM
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#308
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 Senior Member Group: Members Posts: 1423 Joined: 26-July 08 Member No.: 4270 |
What's the possibility of a global map at 2 m/px resolution?
-------------------- -- Hungry4info (Sirius_Alpha)
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Aug 4 2010, 07:17 PM
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#309
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
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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Aug 4 2010, 07:23 PM
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#310
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Senior Member Group: Moderator Posts: 3233 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
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.
-------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Aug 4 2010, 08:26 PM
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#311
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 Member Group: Members Posts: 259 Joined: 23-January 05 From: Seattle, WA Member No.: 156 |
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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Aug 4 2010, 08:35 PM
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#312
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
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Aug 5 2010, 12:41 AM
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#313
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Senior Member Group: Members Posts: 1423 Joined: 26-July 08 Member No.: 4270 |
Alright, thanks. I understand.
-------------------- -- Hungry4info (Sirius_Alpha)
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Aug 5 2010, 01:29 AM
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#314
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Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Been awhile since we had a truly atrocious pun on UMSF; I was getting worried. Congrats, Gsnorg!
-------------------- 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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Aug 5 2010, 08:32 PM
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#315
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Member Group: Members Posts: 259 Joined: 23-January 05 From: Seattle, WA Member No.: 156 |
Aww, shucks! It was my pleasure.
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