PROJECT NAME
  Vernal_crater

HIRISE SOURCE IMAGES
 ESP_011844_1855
 PSP_002812_1855

TECHNICAL CONTACT INFORMATION
  NAME          NATHAN MOGK
 INSTITUTION   UNIVERSITY OF ARIZONA

Products are tied to MOLA elevations.
Elevation range for this project:
  VALID_MINIMUM    = -2013.29 m
  VALID_MAXIMUM    = -862.69 m

SOCET SET NGATE was used to extract terrain.

Post spacing in DTM is 1 m.

Notes: SOCET Set triangulation results:
Total RMS ==>       1.0382 px
RMS x     ==>       1.1762 m
RMS y     ==>       11.824 m
RMS z     ==>       5.6312 m

KNOWN ARTIFACTS
 These are known artifacts present in some, but not all, HiRISE DTMs.
 They may not be present in this DTM! Look at the terrain shaded relief to detect these before using the DTM!
 - Boxes
	Some DTMs have square areas that are usually about .5-1 m different in elevation from the surrounding areas.
 	These are artifacts of the processing algorithms used in Socet Set ((c) BAE Systems).
 	There may be goups of these boxes. They are almost impossible to edit out, so the user should look
 	for such artifacts in a terrain shaded relief map before using the DTM for analysis.
 - CCD seams
	A HiRISE image is made up of 10 individual images, stitched together along their long edges.
	In a DTM, these seams can be visible as long lines. These seams are difficult to remove.
 - Faceted areas
 	Areas that were very bland (low contrast) or deeply shadowed with low contrast and low signal may have
 	a "faceted" look to them. Terrain in these areas is not trustworthy.