Mars 3 (Various Topics Merged) |
Mars 3 (Various Topics Merged) |
Dec 29 2004, 10:36 PM
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
On my website sometime back, I added a page on the image fragment sent back by the Mars-3 Lander. I released serveral versions, including the best quality processing using othodox techniques I would use on other images plus colorization here:
http://pages.preferred.com/%7Etedstryk/fragmentc.jpg However, I released another image, which I called a "What if" image. This image can be seen here http://pages.preferred.com/%7Etedstryk/m3s5b.jpg It was produced via extreme processing of the original data to make a Mars-like scene, but I made it clear on my website it was only a speculative image. I strongly doubt if the raw data even shows Mars at all - it could be all noise. But since this mode of processing looked strangely Viking-like, I figured I would put it on the web. I was warned by several, who said that while fun, some kooks might take it seriously. My response was that I really don't care what kooks think. Then I noticed this web page: http://en.wikipedia.org/wiki/Mars_2 They used the overprocessed image. I feel like it is being presented as a true photograph. This is of concern. -------------------- |
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May 2 2006, 09:59 AM
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Founder Group: Chairman Posts: 14434 Joined: 8-February 04 Member No.: 1 |
Might it be a vertically oriented image, but with a cover or piece of structure blocking the first part thus giving the illusion of a horizon?
Doug |
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May 2 2006, 01:44 PM
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Member Group: Members Posts: 378 Joined: 21-April 05 From: Portugal Member No.: 347 |
Might it be a vertically oriented image, but with a cover or piece of structure blocking the first part thus giving the illusion of a horizon? Doug If I'm not mistaken, the image was scanned using vertical lines, and from left to right, the same as with the other russian probes (Luna, Venera, etc), right? So the Mars 3 image we see coming out of the printer is in fact rotated 90º. Now the issue is to know the direction of the scanning: was it up->down? or down->up in each line? Not knowing this, my judgement is that we are seeing a vertical image, horizontally compressed and perhaps with a flipped scaning direction. This can explain why the "sky" looks darker than the "horizon". The image might be is reversed ;-). Here's my guess at the original image correct orientation: White area at left is the start of the scan, with some sort of autogain feature going down until the image is correctely exposed. And a processed version (just geometrical correction, rotation to the right and some noise reduction): -------------------- _______________________
www.astrosurf.com/nunes |
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May 3 2006, 08:57 AM
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#4
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Senior Member Group: Members Posts: 1089 Joined: 19-February 05 From: Close to Meudon Observatory in France Member No.: 172 |
Not knowing this, my judgement is that we are seeing a vertical image, horizontally compressed and perhaps with a flipped scaning direction. This can explain why the "sky" looks darker than the "horizon". The image might be is reversed ;-). Assuming that this is indeed a compressed vertical scan of a panoramic section : here is the 20:1 stretch with a quick contrast balance. If the atmosphere was still filled-up with dust (high opacity) the darkening of the atmosphere near the "horizon" is consistent with what was observed from VL1 (link herebelow to VL1 images before and during a dust storm) http://www.unmannedspaceflight.com/index.p...indpost&p=23875 |
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