Wils' Tetrahedron

emanuel,

Your key looks more like what I see in the original image than does the other key. Except, why did you leave out his two, or is it three?, "penises"?, "gonopodiae"?

These appendages may not actually be sex organs, but they are in about the right place. Martian anatomy seems to parallel terrestrial anatomy to a certain extent.

The sun azimuth is 2.96 degrees. All have remarked that it appears to be coming from the right in ZMs posted image but the very first image of this post clearly shows the sun from the left. Note also the ridge line to the left of the tetrahedron, it is a high albedo on the left side just as the tetrahedron. The shadowed sides are to the right in the image in the first post of this thread. Note the sharp ridge lines that form the tetrahedron, that to me is a clear indication that this is not a pit in any way shape or form but a mounded object. Also note that there are a few seep type stains on the left side (facing the sun) that start mid way on the face of that side as a very narrow point and expand outward as they travel to the left or the base of the object. Neils rendering shows that fairly well.

You will find that if you visit the USGS site and the MSSS site that there are different orientations of this image which is bothersome for discussions. The information on the sun angle etc is pasted here from the MOC site: www.msss.com/moc_gallery/e01_e06/images/E06/E0600269.html



Image ID (picno): E06-00269
Image start time: 2001-07-04T09:22:05.84 SCET
Image width: 512 pixels
Image height: 17920 pixels
Line integration time: 0.4821 millisec
Pixel aspect ratio: 1.04
Crosstrack summing: 4
Downtrack summing: 4
Compression type: MOC-PRED-X-5
Gain mode: CA (hexadecimal)
Offset mode: 12 (decimal)

Derived values

Longitude of image center: 76.83°W
Latitude of image center: 5.24°S
Scaled pixel width: 5.73 meters
Scaled image width: 2.93 km
Scaled image height: 106.71 km
Solar longitude (Ls): 189.46°
Local True Solar Time: 14.70 decimal hours
Emission angle: 0.16°
Incidence angle: 40.56°
Phase angle: 40.50°
North azimuth: 93.02°
Sun azimuth: 2.96°
Spacecraft altitude: 381.00 km
Slant distance: 381.00 km


Additionally I have acquired The Gimp software and the shape from shading plug-in however I find that I cannot get it to work as the plug-in needs some tweaking by header changes etc.... a little beyond my current programming skills. If anyone out there can give me assistance with that I would love to put the tetrahedron and parrotopia through that program it would help our perspectives immensely. I would even be glad to just have someone that has the program run the images for us....
starjim@optonline.net is my email

*Jim

Jim Miller, You can find anything if you want to!

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by emanuel</i>
<br />who made the dolphin key in your slideshow? I've posted the image below before, but nobody commented on it.<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">This seems to be another case of what monitor you are viewing on. On my monitor, your "rabbit ears" and tail are at a different level of shading than what appears in the original, which seems much stronger. But to answer your question, here's the information in my files: URL: www.msss.com/moc_gallery/ab1_m04/jpegmaps/SP125803.jpg
Feature: dolphin
First reported: “Mark the Webmaster” &lt; welcome.to/cydonia> ; - 12/98

It was a contributed image that circulated at the time, and to my knowledge, I have had no contact with this source. -|Tom|-

Having been to many construction sites, my experience tells me that the tetrahedron appears to have been "chiseled" out of a natural formation rather than built. The formation seems to have a lighter hue than surrounding rock/soil. This is almost always the case because long exposed rock is subject to chemical corrosion and radioactive degradation. These mechanisms almost always turn "stone" to a darker hue. Newly exposed stone is usually lighter.

Photographs of higher resolution may show, or not show, fields of chiseled debris near the base of the tetrahedron. If such higher resolution photographs did show debris at an obviously higher density than the surrounding countryside, I would consider that to be proof of artificiality. Just an opinion.

Gregg Wilson

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">These appendages may not actually be sex organs, but they are in about the right place. Martian anatomy seems to parallel terrestrial anatomy to a certain extent.<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

Larry, you make me laugh out loud!

And Tom, I've adjusted my brightness/contrast up and down and simply cannot see any difference in shading at any point. I also do not understand how a difference in monitor quality can adjust for shading like that. Please give me more specifics on your monitor and I will find a matching one and take another look. Also, can you please post the link to the original MSS strip for the "dolphin" so I cna look at the highest quality image.

Thanks!

Emanuel

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by emanuel</i>
<br />I've adjusted my brightness/contrast up and down and simply cannot see any difference in shading at any point.<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">I'm no monitor expert, so I don't know what differences are critical. But it is certainly not brightness and contrast, which must be adjusted in an image processor, not on your monitor. However, just try looking at any detailed image on a variety of monitors, and you will see amazing differences in what each shows.

The only generalizations I can make are that larger screen sizes, higher resolution, higher contrast range (meaning mainly the blackness of "all black"), and smaller dot pitch are all good, perhaps in that order of importance. But this advice is empirical on my part, not based on any actual knowledge of monitor workings.

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">can you please post the link to the original MSS strip for the "dolphin" so I can look at the highest quality image.<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">I provided a link above. You need to learn the basics of MGS image navigation so you can find all related images from any one of them. In this case, try www.msss.com/moc_gallery/ab1_m04/images/SP125803.html -|Tom|-