Author Topic: List of oblique view NAC images  (Read 44624 times)

JFincannon

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Re: List of oblique view NAC images
« Reply #150 on: November 05, 2012, 09:54:36 pm »


http://wms.lroc.asu.edu/lroc/view_lroc/LRO-L-LROC-2-EDR-V1.0/M187565466RE

Oblique image M187565466R and L combined, shrunk along one axis to 19 % of original and then both axes shrunk 25%, rotated 90 degrees and 80% jpeg compression.

Crater Roberts and Roberts M in the back.

jules

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Re: List of oblique view NAC images
« Reply #151 on: November 05, 2012, 11:29:36 pm »
Dramatic moonscape. 8) You get a real sense of how much bombardment went on.

JFincannon

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Re: List of oblique view NAC images
« Reply #152 on: December 31, 2012, 06:00:58 pm »
I saw a little segment of a show last night called "Unsealed: Alien Files - Aliens on the Moon" which showed the oblique image released here:
http://lroc.sese.asu.edu/news/?archives/411-Tycho-Central-Peak-Spectacular!.html.  They adjusted the contrast and brightness of that image to get something like the attached image, claiming NASA was erasing part of the image to hide something.

Of course, the explanation is that the oblique image was a composite from the two NAC cameras on LRO.  The demarcation line is exactly where the two images are joined.  Examining the intensity level of the pixels in the bottom image "dark" shadow area (in the 8 bit tif images) is 2-3, while the value for upper image is 4-5. Why is the dark level in one camera different than the other?  I think its due to the amount of light entering that camera.  Wouldn't that affect the iris on the camera?  I have seen many oblique LRO images where there were significant differences between the two cameras in terms of contrast.

jules

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Re: List of oblique view NAC images
« Reply #153 on: December 31, 2012, 09:13:34 pm »
I thought the L/R image pairs were taken at the same time so don't understand why they should end up different intensities.
Probably missing the obvious...