Apollo Sites from LRO |
Apollo Sites from LRO |
Jul 17 2009, 02:52 PM
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
Thought this deserved a new thread- we can't talk about EVERY LRO target in the one thread
I made a mistake in this one - I didn't include the thruster plume guards. My MER/MPF simulation for HiRISE seemed to come out about right - so fingers crossed that this will be there or there abouts as well. Still in a comissioning phase, something of a slant angle - I'd expect approx 1.5m/pixel if it's at the 120km figure mentioned earlier. |
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Apr 4 2017, 11:54 PM
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#2
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Solar System Cartographer Group: Members Posts: 10183 Joined: 5-April 05 From: Canada Member No.: 227 |
Thanks, Michael - I have seen your images at the Apollo Lunar Surface Journal (in case any UMSF fans are not familiar with it, it is an unequaled source of information on all Apollo lunar surface activities)
At the scale these maps will be reproduced the highest resolution is not really necessary. But thanks anyway. The Lunar Orbiter image you posted is sharper than any I have seen. Is it from LOIRP? A similar before and after pair can be made at the Surveyor 6 site where we also have an LO image - I think it's posted above in this thread, but not as clearly as you could show it. 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 PD: 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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Apr 5 2017, 02:37 AM
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#3
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Junior Member Group: Members Posts: 31 Joined: 24-February 17 From: California Member No.: 8127 |
Thanks, Michael - I have seen your images at the Apollo Lunar Surface Journal (in case any UMSF fans are not familiar with it, it is an unequaled source of information on all Apollo lunar surface activities) At the scale these maps will be reproduced the highest resolution is not really necessary. But thanks anyway. The Lunar Orbiter image you posted is sharper than any I have seen. Is it from LOIRP? A similar before and after pair can be made at the Surveyor 6 site where we also have an LO image - I think it's posted above in this thread, but not as clearly as you could show it. Phil Hi Phil, I retrieved the LO image from the USGS Lunar Orbiter PDS image archive which is continuously being updated by the LOIRP team to the USGS repository. I would like to visit the LOIRP team's former McDonald's location where they have been doing all of their work. It would be a riot of fun to see how they do it! You might notice that the Lunar Orbiter close-up image which I posted (after reprocessing it and reprojecting it to match the image scale of my deconvolved and enhanced LRO image) clearly shows small scale image streaking and mottling artifacts. These artifacts are in the original image. It appears that these artifacts perhaps were created by either anisotropic or wavelet filtering algorithms which may have been used by the LOIRP team to "denoise" the film grain. If so, then their filter settings were too strong (as in too spatially broad). On the other hand, I suppose that it is possible that these streaking and mottling artifacts could have been created by the Lunar Orbiter's analog film scanning, signal transmission, and signal reception systems since pure analog systems, unlike digital systems, can behave "quite weirdly" at their limits. I also have to factor in the fact that all optical systems, including the optical system which scanned the LO developed film, are in fact simply other analog systems. By the way, the terrain did not prevent the A12 astronauts from seeing the Surveyor 3 retro rocket impact location. This is based on a LRO DTM of the terrain. The Apollo 12 EVA photograph AS12-46-6759 may show the impact crater and "something" a bit in the foreground. I will have to deconvolve this image, and possibly the adjacent images, in order to "see what we can see". These EVA images were clearly taken with the Hasselblad camera lens set at the "medium" lens paddle focus distance instead of the infinity focus distance. What I need to know is just what a Surveyor's jettisoned retro rocket looks like. Best regards, --Michael |
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Apr 5 2017, 09:51 AM
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#4
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Junior Member Group: Members Posts: 39 Joined: 26-March 09 From: Cornwall Member No.: 4697 |
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