August 18, 2010

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Two Looks, Same Data

LPOD-Aug18-10.jpg

right image from Maurice Collins

Occasionally the Lunar Orbiter Laser Altimeter (LOLA) team releases a topographic image of an area of interest. In this case (right), it was the Crisium Basin, with the colors indicating carefully measured elevations (although the altitude scale is nearly impossible to use). An alternative visualization of the same data is provided by Maurice's creation of a synthetic image (left) using LTVT software. Because the effective illumination angle of the left image is very low (1°), the subtle mare ridges on the floor of Mare Crisium are very easy to see. In fact, although the areas indicated on the right by arrows are Chuck Wood//

Technical Details
I tried overlaying these two views but their scales varied across the image so that rubber-sheet adjustments were required - more than I could do in Photoshop!

Related Links
Rükl plate 26


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