ivo://CDS/P/Io/Galileo-SSI-1kmCDSFernique P.2018-01-14T18:34:00Z2019-05-21T06:59:00ZCDS Helpdeskcds-question@unistra.frGalilean satellitesIoThis basemap of Jupiter's moon Io was produced by combining the best images from both the Voyager 1 and Galileo Missions. Although the subjovian hemisphere of Io was poorly seen by Galileo, superbly detailed Voyager 1 images cover longitudes from 240deg W to 40deg W and the nearby southern latitudes. A monochrome mosaic of the highest resolution images from both Galileo and Voyager 1 was assembled that includes 29 Voyager 1 images with spatial resolutions sometimes exceeding the 1 km/pixel scale of the final mosaic. Because this mosaic is made up of images taken at various local times of day, care must be taken to note the solar illumination direction when deciding whether topographic features display positive or negative relief. In general, the illumination is from the west over longitudes 40 deg to 270 deg W, and from the east over longitudes 270 deg W to 40 deg W. Color information was later superimposed from Galileo low phase angle violet, green, and near-infrared (756 nanometer wavelength) images. The Galileo Solid-State Imaging (SSI) camera's silicon charge-coupled device (CCD) was sensitive to longer wavelengths than the vidicon cameras of Voyager, so that distinctions between red and yellow hues can be more easily discerned. The "true" colors that would be visible to the eye are similar but much more muted than shown here. Image resolutions range from 1 to 10 km/pixel along the equator, with the poorest coverage centered on longitude 50 W10.1007/BF00216864, 10.1016/j.icarus.2011.05.007https://alasky.cds.unistra.fr/Planets/CDS_P_Io_Galileo-SSI-1kmSurveyResearchIsDerivedFromPlanetary Data System, from USGS Astrogeology Science Center https://astrogeology.usgs.gov/search/map/Io/Voyager-Galileo/Io_Galileo_SSI_Global_Mosaic_FalseColor_1kmThis HiPS is distributed under ODbL license by Unistra/CNRShttps://alasky.cds.unistra.fr/Planets/CDS_P_Io_Galileo-SSI-1kmhttps://alaskybis.cds.unistra.fr/Planets/CDS_P_Io_Galileo-SSI-1kmhttps://alasky.cds.unistra.fr/Planets/CDS_P_Io_Galileo-SSI-1km/Moc.fits