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Viking Lander 1 detailed w/MRO, Results of imaging process VL1 detailed with MRO
vikingmars
post Aug 25 2007, 09:43 PM
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Attached Image
smile.gif Thanks to the MRO the Viking Lander 1 site has been viewed twice already at nerly the same Mars local time :
- PSP_001521_2025_RED.jp2 taken on 11 November 2006 (w/30.3 cm/pixel resolution) at 3:20 PM ;
- PSP_001719_2025_RED.JP2 taken on 12 december 2006 (w/28.8 cm/pixel resolution) at 3:27 PM.

So I decided to pixel overlap the 2 pictures retrieved from the LPL site at their maximum resolution (as "full JPEG 2000" images), knowing that each individual pixel from those 2 images would not cover exactly the same area on Mars.
The goal was :
1. to gain some resolution over individual pictures ;
2. to assess the reality of some features as seen from orbit ;
3. to determine is some individual Lander components could be seen ;
4. to see an "average" site free from bad pixel and false features.

After a painstaking process, here are the results on the 4 goals :
1. resolution gained : ==> not obvious on overlap image ;
2. reality of some features : ==> real features are seen on overlap image ;
3. Lander components : ==> some individual components discriminated ;
4. "average" site free from bad pixel and false features ==> goal attained.

About the lander itself : the shadow seen for its high-gain antenna mast and for its antenna itself is narrow. This implies that the disk-shaped antenna was not facing the sun when the images were taken, meaning that the high-gain antenna is pointing either towards the north or towards the south.

The same overlap processings were also applied to the area where the backshell touched down the surface with its parachute ==> An overlap image is seen also.

About the landing site itself around Lander 1 with its features, please refer to the explanations given it the previous post :
http://www.unmannedspaceflight.com/index.p...ost&p=79379

Enjoy ! smile.gif
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Phil Stooke
post Aug 29 2007, 12:33 AM
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Olivier, did you make a Viking 2 site model? Viking 1 is excellent.

Phil


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... because the Solar System ain't gonna map itself.
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vikingmars
post Aug 29 2007, 07:47 AM
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QUOTE (Phil Stooke @ Aug 29 2007, 02:33 AM) *
Olivier, did you make a Viking 2 site model? Viking 1 is excellent. Phil


Dear Phil,
The Lander model itself was to be used also as VL2 on a specific Utopia model. I started modelling the Vl2 site which was to be with winter frost for scenic purposes and for easier differentiation should it was to be shown on exhibits... After the very end of the mission in 1983 when all hopes of recovering VL1 were lost, this Utopia work was never completed. When I worked with Jim French at JPL at the very start of the MGCO project (renamed later as Mars Observer), we did numerous shadows simulations with the Lander model and found that MGCO's hi-res camera (MOC with 1.5 m/pixel resolution) could probably not discern VL1 or VL2 at local hours between 10:00 am to 14:00 pm, because the Lander protruding parts and its small shadows then PLUS the dust covering part of it made the Lander looking very much from above like another pile of rocks... What we understood was that we needed either an higher-resolution camera (50 cm/pixel minimum resolution was required) or MOC images taken with a rising or setting sun which casts long shadows on the Landers...
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Posts in this topic
- vikingmars   Viking Lander 1 detailed w/MRO   Aug 25 2007, 09:43 PM
- - vikingmars   (following images)   Aug 25 2007, 09:45 PM
|- - SpaceListener   QUOTE (vikingmars @ Aug 25 2007, 04:45 PM...   Aug 26 2007, 04:34 AM
- - climber   Thanks to share this high quality work with us Oli...   Aug 25 2007, 10:20 PM
|- - vikingmars   QUOTE (climber @ Aug 26 2007, 12:20 AM) T...   Aug 25 2007, 10:55 PM
- - Decepticon   I hope we can add to this in the future again!   Aug 25 2007, 10:23 PM
- - Gsnorgathon   The Viking lander's three legs form a nice tri...   Aug 26 2007, 06:32 AM
- - vikingmars   Here is a simulation done with my VL1 model to hel...   Aug 26 2007, 08:18 AM
|- - SpaceListener   QUOTE (vikingmars @ Aug 26 2007, 03:18 AM...   Aug 28 2007, 02:04 AM
- - climber   Hello Olivier! Thanks for the answer. I guess ...   Aug 26 2007, 08:56 AM
- - nprev   VM, that is sweet... ...hadn't seen your mo...   Aug 26 2007, 02:10 PM
- - vikingmars   Dear Nprev, Thanks ! As you see, this model se...   Aug 26 2007, 03:07 PM
- - Phil Stooke   Olivier, did you make a Viking 2 site model? Viki...   Aug 29 2007, 12:33 AM
|- - vikingmars   QUOTE (Phil Stooke @ Aug 29 2007, 02:33 A...   Aug 29 2007, 07:47 AM
- - vikingmars   QUOTE (vikingmars @ Aug 25 2007, 11:43 PM...   Apr 2 2008, 07:51 PM
|- - JRehling   This is a great image! Historic, even. I think...   Apr 2 2008, 08:05 PM
||- - vikingmars   QUOTE (JRehling @ Apr 2 2008, 10:05 PM) T...   Apr 3 2008, 06:57 PM
||- - dilo   QUOTE (vikingmars @ Apr 3 2008, 07:57 PM)...   Apr 4 2008, 07:42 PM
||- - ustrax   QUOTE (dilo @ Apr 4 2008, 08:42 PM) I mad...   Apr 4 2008, 08:58 PM
|||- - Sunspot   QUOTE (ustrax @ Apr 4 2008, 09:58 PM) Loo...   Apr 4 2008, 09:38 PM
||||- - peter59   QUOTE (Sunspot @ Apr 4 2008, 10:38 PM) I ...   Apr 5 2008, 08:16 AM
|||- - djellison   QUOTE (ustrax @ Apr 4 2008, 09:58 PM) Dou...   Apr 4 2008, 10:32 PM
|||- - ustrax   THANK you Doug! I'm really excited abou...   Apr 4 2008, 11:52 PM
|||- - Stu   QUOTE (ustrax @ Apr 5 2008, 12:52 AM) I...   Apr 5 2008, 07:26 AM
|||- - imipak   QUOTE (Stu @ Apr 5 2008, 07:26 AM) Hmmm, ...   Apr 5 2008, 11:38 AM
||- - vikingmars   QUOTE (dilo @ Apr 4 2008, 09:42 PM) Great...   Apr 6 2008, 08:28 PM
|- - ustrax   This is truly a keeper Olivier! Fantastic w...   Apr 4 2008, 01:17 PM
|- - ugordan   QUOTE (ustrax @ Apr 4 2008, 03:17 PM) VL1...   Apr 4 2008, 01:32 PM
|- - JRehling   Well, the rust-proofing was an extra million dolla...   Apr 4 2008, 06:34 PM
- - nprev   ...you're in for a treat, Rui. I'm so old ...   Apr 5 2008, 02:21 AM
|- - ElkGroveDan   QUOTE (nprev @ Apr 4 2008, 06:21 PM) In s...   Apr 5 2008, 02:54 AM
|- - imipak   QUOTE (nprev @ Apr 5 2008, 02:21 AM) Of c...   Apr 5 2008, 11:22 AM
- - Sunspot   But technical problems with some channels in the c...   Apr 5 2008, 06:03 AM
|- - djellison   QUOTE (Sunspot @ Apr 5 2008, 07:03 AM) t ...   Apr 5 2008, 08:26 AM
- - edstrick   "...I'm really excited about it...this is...   Apr 5 2008, 09:54 AM
- - Stu   I have to say that even though I was watching the ...   Apr 5 2008, 09:59 AM
|- - ElkGroveDan   QUOTE (Stu @ Apr 5 2008, 01:59 AM) I have...   Apr 5 2008, 04:14 PM
- - nprev   Monday, 26 May is a US national holiday (Memorial ...   Apr 5 2008, 02:14 PM
|- - ustrax   Hey...I'll just have to count with the help fr...   Apr 5 2008, 03:40 PM
- - dvandorn   QUOTE (imipak @ Apr 5 2008, 06:38 AM) I...   Apr 5 2008, 04:51 PM
- - edstrick   "Does anyone know if tapes of the EDL footage...   Apr 6 2008, 05:23 AM


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