Mars Exploration Rover (MER) Spirit Basemap - 25cm/pixel

The basemap represents a small portion of Gusev Crater from the Spirit Lander position to Home Plate, south of Husband Hill. This basemap is a section clipped from the HiRISE orthoimage, PSP_001777_1650_RED_A_01_ORTHO.JP2 (NASA/JPL/University of Arizona/USGS), which is available for download at http://www.uahirise.org/PDS/DTM/PSP/ORB_001500_001599/PSP_001513_1655_PSP_001777_1650/PSP_001777_1650_RED_A_01_ORTHO.JP2. 
An orthoimage is an orthorectified data without topographic distortions. This means at each pixel it is projected as if you are looking directly down at the terrain. First, a HiRISE DTM was made from HiRISE stereo pairs covering this region by the HiRISE team. The DTM was registered to the MOLA global elevation map. Once the DTM was generated, orthoimages could be made of the source stereo pair for the DTM. Orthoimage PSP_001777_1650_RED_A_01_ORTHO.JP2 was chosen and clipped as a basemap for the Spirit Rover Landing site.  


File: PSP_001777_1650_RED_A_01_MERA.png.zip
	    size: 103MB 


Extent (Decimal Degrees):
West Longitude: 175.472831177
East Longitude: 175.531724874
North Latitude: -14.5555356608
South Latitude: -14.6044006373

Extent (Meters):
West: -1610.42
East: 1880.49
South: -865671.44
North: -862774.97

Projection Information:
DATUM: Mars_2000_Sphere
SPHEROID: Mars_2000_Sphere_IAU_IAG
Radius: 3396190 m
Projection: Plate_Carree
False Easting: 0
False Northing: 0
Central Meridian: 175.5
Unit: Meter
Pixel Size: 0.25 m

Well-Known Text Projection format:
PROJCS["Mars2000_Equidistant_Cylindrical_clon0",GEOGCS["GCS_Mars_2000_Sphere",DATUM["D_Mars_2000_Sphere",SPHEROID["Mars_2000_Sphere_IAU_IAG",3396190.0,0.0]],PRIMEM["Reference_Meridian",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Plate_Carree"],PARAMETER["false_easting",0.0],PARAMETER["false_northing",0.0],PARAMETER["central_meridian",175.5],UNIT["Meter",1.0]]

HiRISE images processed for this basemap:
PSP_001777_1650_RED

Image Information:
Lines: 13818
Samples: 11465
Pixel Depth: 8 bit
Pixel Type: unsigned integer
Pixel Size: 0.25 m
Compression Type: Deflate/Inflate
Format: PNG
Bands: 1
NoData Value: 256

Image clipping processing Environment:
Microsoft Windows 10 Pro; ESRI ArcGIS 10.2.2.3552

Reference:
Kirk, R.L., Howington-Kraus, E., Rosiek, M.R., Anderson, J.A., Archinal, B.A., Becker, K.J., Cook, D.A., Galuszka, D.M., Geissler, P.E., Hare, T.M., Holmberg, I.M., Keszthelyi, L.P., Redding, B.L., Delamere, A.W., Gallagher, D., Chapel, J.D., Eliason, E.M., King, R., McEwen, A.S., and the HiRISE Team, 2008, Ultrahigh resolution topographic mapping of Mars with MRO HiRISE stereo images: Meter-scale slopes of candidate Phoenix landing sites, J. Geophys. Res., 113, E00A24, doi: 10.1029/2007JE003000.