Chandrayaan 3 lander and rover, India's lunar mission to replace Chandrayaan 2's lander/rover |
Chandrayaan 3 lander and rover, India's lunar mission to replace Chandrayaan 2's lander/rover |
Sep 24 2023, 07:54 PM
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#196
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Solar System Cartographer Group: Members Posts: 10226 Joined: 5-April 05 From: Canada Member No.: 227 |
Thank you for letting us see that.
The slide from the video showed the view of the lander that we have already seen as well as the two new ones. When I compare them... it looks like the object on the horizon of the rocks stereo image is the top of the lander, just visible over a small local rise in the terrain. 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 PDF: 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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Sep 24 2023, 09:13 PM
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#197
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Member Group: Members Posts: 108 Joined: 12-September 19 Member No.: 8664 |
And here I was thinking they are just very strange outcrop of rocks. That indeed looks like top of lander, really nice catch.
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Oct 4 2023, 03:38 PM
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#198
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Junior Member Group: Members Posts: 55 Joined: 23-July 11 Member No.: 6083 |
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Oct 6 2023, 09:40 PM
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#199
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Member Group: Members Posts: 108 Joined: 12-September 19 Member No.: 8664 |
Another Navcam pair from IAC 2023 presentation.
https://www.youtube.com/watch?v=iY9qIBTZV8E&t=1008s Showing the 4 meter crater encountered on 27 August. |
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Oct 24 2023, 06:34 PM
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#200
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Solar System Cartographer Group: Members Posts: 10226 Joined: 5-April 05 From: Canada Member No.: 227 |
https://www.youtube.com/watch?v=6ZRJ54SKUX8
This link is to a very interesting talk by Santosh Vadawale of the Physical Research Lab in Ahmedabad, the PI for the APXS on the Pragyan rover. It goes from the beginning of discussions about the instrument to flight operations. Among the interesting points, the fixed solar panel on Pragyan plus the motion of the Sun across the sky originally dictated a counterclockwise traverse after deployment. That route was blocked by craters so a 'backwards' path was selected, requiring a 180 degree turn after every drive to charge the battery. Also a map of locations of the APXS measurements (of which more later). The hop at the end of the lunar day was preceded by a short test burn. 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 PDF: 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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Oct 24 2023, 06:47 PM
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#201
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Solar System Cartographer Group: Members Posts: 10226 Joined: 5-April 05 From: Canada Member No.: 227 |
About the APXS map. Here it is, superimposed on the earlier ISRO map. There are multiple points of disagreement. We can say that the definitive map is not yet available. One thing that will help will be a post-mission OHRC image which might show the rover and clarify its location. The lander location is more accurate on the APXS map.
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 PDF: 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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Jan 29 2024, 03:23 AM
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#202
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Solar System Cartographer Group: Members Posts: 10226 Joined: 5-April 05 From: Canada Member No.: 227 |
Shan Subramanian has tweeted this LRO image:
https://twitter.com/Ramanean/status/1750895541045915669 I compared it with the OHRC image used as a background to the rover traverse map. There seems to be a feature casting a shadow like the lander but smaller and not present in older images. It is close to where the previous maps placed Pragyan so it is probably the rover. 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 PDF: 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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Mar 24 2024, 11:47 AM
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#203
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Member Group: Members Posts: 108 Joined: 12-September 19 Member No.: 8664 |
IAU approves ‘Statio Shiv Shakti’ as name for Vikram-2 landing site.
https://planetarynames.wr.usgs.gov/Feature/16272 QUOTE Compound word from Indian mythology that depicts the masculine (“Shiva”) and feminine (“Shakti”) duality of nature; Landing site of Chandrayaan-3’s Vikram lander.
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May 3 2024, 05:10 AM
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#204
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Solar System Cartographer Group: Members Posts: 10226 Joined: 5-April 05 From: Canada Member No.: 227 |
https://twitter.com/this_is_tckb/status/1785878807557099996
This link shows a new OHRC image of Chandrayaan 3's Vikram lander and a small spot next to it. The post suggests it is Pragyan, the rover, right next to the lander. But if you follow the source you find an Indian media report on this specific image which says it was taken on 15 March 2024, i.e. long after the end of the mission. ISRO's map of the traverse shows that Pragyan stopped operating about 33 m northwest of the lander (and a second map from one of the instrument PIs puts it in a similar location). This new image actually shows the long shadow cast by Pragyan's solar panel, parallel to the lander's shadow, in that location. So the second little bright spot cannot be Pragyan. Curiously, the latest OHRC image of SLIM shows a similar bright spot near the lander, not corresponding to anything obvious. I think it may be an artifact, caused by some internal reflection of the lander image perhaps, and showing up just because it is so bright. (Also posted under SLIM) 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 PDF: 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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May 3 2024, 03:01 PM
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#205
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Senior Member Group: Members Posts: 1452 Joined: 26-July 08 Member No.: 4270 |
How much do the OHRC images of the Apollo descent stages constrain that hypothesis? I don't see anything like this in those images but I can think of a few reasons why.
1) The descent stages are so large that the artifact is overlapping with some hardware in the image? 2) The descent stages are covered in enough dust to reduce their reflectivity enough to cause this phenomenon? -------------------- -- Hungry4info (Sirius_Alpha)
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May 3 2024, 03:46 PM
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#206
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Solar System Cartographer Group: Members Posts: 10226 Joined: 5-April 05 From: Canada Member No.: 227 |
I don't know but my guess may be wrong! I am still puzzled by the presence of a bright spot adjacent to each of two landers. The shadow cast by Vikram looks like it comes from both bright spots, so the two spots might be from different parts of the lander, but SLIM is still a puzzle.
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 PDF: 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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May 15 2024, 03:26 AM
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#207
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Senior Member Group: Members Posts: 1452 Joined: 26-July 08 Member No.: 4270 |
We have another Chandrayaan-2 image of the lander, taken on 25 April.
https://twitter.com/Ramanean/status/1790582806084743207 -------------------- -- Hungry4info (Sirius_Alpha)
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Aug 18 2024, 02:00 PM
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#208
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Member Group: Members Posts: 108 Joined: 12-September 19 Member No.: 8664 |
Coming soon!
https://pradan.issdc.gov.in/ch3/ Reddit user u/-StandingAlone shared few posters they saw at PRL open house exhibition. Two of them also show Pragyan. https://1drv.ms/f/s!AsXkTp7y_ES1gguR3olrbH215HrP |
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Aug 20 2024, 12:15 AM
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#209
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Solar System Cartographer Group: Members Posts: 10226 Joined: 5-April 05 From: Canada Member No.: 227 |
Thanks for giving us that link. Very useful.
The poster with the APXS map is interesting. If the map is aligned with the previous map we had (see my post from October 24th), it's different again. This rather messy map is a composite of the original ISRO map, the previous APXS map and the new APXS map. It's a reminder that there is as yet no definitive map of Pragyan's route and activities. I think that such a map should have been a priority from landing day onwards. 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 PDF: 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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Aug 20 2024, 05:38 AM
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#210
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Member Group: Members Posts: 108 Joined: 12-September 19 Member No.: 8664 |
Per S Somanath, Chandrayaan-3 data will be made available on 23 August 2024. Hopefully we will have navcam images and other data to have better idea.
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