Chandrayaan-II, All Chandrayaan-II related articles |
Chandrayaan-II, All Chandrayaan-II related articles |
Dec 21 2010, 05:47 PM
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Junior Member Group: Members Posts: 21 Joined: 23-December 08 From: Mumbai Member No.: 4513 |
RussianSpaceWeb has reported that the possible landing sites for Chandrayaan-II called Luna-Resurs by the Russians have been selected. The selection is not final and seems to have been made (or covers only the Russian angle of the story) by Russian space organizations.
There is a detailed account of the selected landing sites for Chandrayaan-II here: http://www.russianspaceweb.com/luna_resurs_landing.html Pradeep -------------------- Pradeep Mohandas,
SEDS India. |
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Sep 7 2019, 06:17 AM
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Solar System Cartographer Group: Members Posts: 10226 Joined: 5-April 05 From: Canada Member No.: 227 |
Well said, Steve.
The live coverage included glimpses of this image: It shows a specific landing area within the target ellipse. It should be easy to find in LRO images but so far I'm not able to identify it. The early morning illumination suggests to me it may be from the orbiter. It doesn't obviously resemble any LRO image I have seen yet. Scale is not clear, but another report in the Times of India said two specific sites 500 m by 500 m and 1.6 km apart had been picked in the landing ellipse. 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 18 2019, 05:57 AM
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Member Group: Members Posts: 108 Joined: 12-September 19 Member No.: 8664 |
Well said, Steve. The live coverage included glimpses of this image: It shows a specific landing area within the target ellipse. It should be easy to find in LRO images but so far I'm not able to identify it. The early morning illumination suggests to me it may be from the orbiter. It doesn't obviously resemble any LRO image I have seen yet. Scale is not clear, but another report in the Times of India said two specific sites 500 m by 500 m and 1.6 km apart had been picked in the landing ellipse. Phil I was able to match the perspective corrected OHRC image shown on screens of Mission Operations Complex with LROC images of the intended primary landing site, sun angle was making the scene look slightly different. https://www.youtube.com/watch?v=KJJov3tXfOU OHRC image labelled as taken on 6 September 2019 on 2030 IST (Indian Std. Time) can be seen in broadcast at 14 min. mark onwards https://www.youtube.com/watch?v=7iqNTeZAq-c&t=831 Marked "Landing Site Area" in yellow box appears to be roughly 50×65 meters in dimension. Placed a 2×2 m 'lander sized' red dot for comparison within it in attached image. Mapped the 15×8 km landing ellipse along intended landing box and primary and alternate landing sites given in LPSC 2018 paper and during broadcast on LRO QuickMap for ease of viewing In broadcast the launch commentator mentioned that the command for descent was sent 84 minutes prior to it and chosen coords were (-70.899920, 22.78110) and alternate site coords at (-68.749153, -18.46947) I haven't been able to find very much technical information about this camera beyond this phone image of an old viewgraph about it which I've enhanced a little. I'll be very curious to see how well this performs; the high resolution coupled with a large number of TDI stages (oddly high, actually, I've no idea why they need so many) presents a lot of challenges. LROC NAC was a much more conservative design in most respects. [attachment=45092:ohrc.png] That slide on OHRC is snapshot I took during a livestreamed presentation of User Interaction Meet of 2016 held by ISRO's National Remote Sensing Centre. That webcast is no longer available and was mainly about Cartosat series of Earth Observation satellites. Meanwhile we might have to wait for LROC imagery a bit longer. https://aviationweek.com/awinspace/nasa-s-l...rayaan-2-lander |
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