May 23, 2007, HiRISE release |
May 23, 2007, HiRISE release |
Guest_AlexBlackwell_* |
May 23 2007, 04:01 PM
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#1
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Guests |
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May 24 2007, 01:19 PM
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Founder Group: Chairman Posts: 14434 Joined: 8-February 04 Member No.: 1 |
I'm not saying that you're not pulling out three different shades from an 8 bit greyscale image, for which some photons from the bottom my be responsible. I'm saying it's impossible to say "that's the bottom". Lest we forget, similar techniques turned a black dunefield into all sorts of things.
I'm not sure that HiRISE can take longer exposures - 4x4 binning might help but of course we can do that with the image on the ground already Doug |
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May 24 2007, 02:04 PM
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Special Cookie Group: Members Posts: 2168 Joined: 6-April 05 From: Sintra | Portugal Member No.: 228 |
I'm saying it's impossible to say "that's the bottom". Lest we forget, similar techniques turned a black dunefield into all sorts of things. Neither am I, I was not saying "look how dark is the bottom, it might even be a pond!" I was focusing on the "walls"... For now... The problem of that dunefield was being a dunefield, let's remember that the techniques applied to Ultreya were accurately developed specifically to deal with an abyss... EDITED: QUOTE ...the upper part of the circle is lighter than the lower part. This might be the floor showing. Yes, I found that curious because it seems to be an extension of the disturbed lighter soil patch outside the hole: -------------------- "Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe |
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