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 12 2019, 01:12 AM
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Solar System Cartographer Group: Members Posts: 10229 Joined: 5-April 05 From: Canada Member No.: 227 |
The 50 cm pixel resolution for LRO's Narrow Angle Camera is based on its altitude, nominally 50 km for its main mission period. They have dropped to 25 km for high resolution imaging of Apollo sites (25 cm per pixel), but now they are in a low-maintenance orbit to extend operational life, and they are higher up: approx. 50 km at the south pole, 200 km at the north pole. Most images of the Chandrayaan 2 site now available are about 100 cm/pixel.
Chandrayaan 2's high resolution camera has 30 cm/pixel resolution from 100 km altitude. I would expect that C2 images could be 3 times better than any LRO images we are likely to see. 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 12 2019, 03:18 PM
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#3
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Senior Member Group: Members Posts: 2542 Joined: 13-September 05 Member No.: 497 |
Chandrayaan 2's high resolution camera has 30 cm/pixel resolution from 100 km altitude. 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. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Sep 12 2019, 09:18 PM
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#4
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Member Group: Members Posts: 122 Joined: 26-June 04 From: Austria Member No.: 89 |
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. As I see on Dsn Now page the data rate of Chandrayaan II orbiter is now quite low in a range of only 1 kbit/sec. LRO has more than 100 times more typically. We will see if they have higher data rates to send big images - anyone knows about this more ? |
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