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High-Resolution Mosaics of the Galilean Satellites from Galileo SSI

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High-Resolution Mosaics of the Galilean Satellites from Galileo SSI Lunar and Planetary Science XXIX 1833.pdf High-Resolution Mosaics of the Galilean Satellites from Galileo SSI. M. Milazzo, A. McEwen, C. B. Phillips, N. Dieter, J. Plassmann. Planetary Image Research Laboratory, LPL, University of Arizona, Tucson, AZ 85721; [email protected] The Galileo Spacecraft began mapping the Jovian orthographic projection centered at the latitude and system in June 1996. Twelve orbits of Jupiter and more longitude coordinates of the sub-spacecraft point to than 1000 images later, the Solid State Imager (SSI) is still preserve their perspective. Depending on the photometric collecting images, most far superior in resolution to geometry and scale, it may be necessary to apply a anything collected by the Voyager spacecraft. The data photometric normalization to the images. Next, the collected includes: low to medium resolution color data, individual frames are mosaicked together, and mosaicked medium resolution data to fill gaps in Voyager coverage, and onto a portion of the base map for regional context. Once very high-resolution data over selected areas. We have the mosaic is finished, it is checked to make sure that the tie been systematically processing the SSI images of the and match points were correct, and that the frames mesh. Galilean satellites to produce high-resolution mosaics and to We produce 3 final products: (i) an SSI-only mosaic, (ii) SSI place them into the regional context provided by medium- images mosaicked onto regional context, and (iii) the resolution mosaics from Voyager and/or Galileo. addition of a latitude-longitude grid to the context mosaic. Production of medium-resolution global mosaics is The purpose of this poster is to show the mosa- described in a companion abstract [1]. All processing is ics. The digital files will be released when all of the SSI completed with the ISIS software from USGS in Flagstaff, frames used in each mosaic are released (one year after re- AZ (see http://wwwflag.wr.usgs.gov/ISIS). ceipt on the ground). The mosaics may be acquired via the Galileo Navigator [2] at http://pele.wr.usgs.gov/Galileo (or After receiving the "raw" images from JPL, the links from that site). next steps are to update the label information and to apply the radiometric calibration. Next, the calibrated images are filtered to replace noisy pixels. Then, each frame is geometrically tied to its neighbors with match points. One References: frame must then be tied to a base map to correct the [1] Becker T. et al. (1998) Cartographic Processing of the pointing offset. After matching and tying the frames, the Galileo SSI DATA: An Update on the Production of Global camera angles are updated via a program called "jigsaw" that Mosaics of the Galilean Satellites, LPSC, this volume. minimizes their pointing errors while holding the position [2] Rosanova, T., et al. (1998) The Galileo Navigator: A of the frame tied to the base map. Next, the separate Tool for Cartographers and Scientists, LPSC, this volume. frames are re-projected to a common map projection and scaled. Usually, the images are also re-projected to an Lunar and Planetary Science XXIX 1833.pdf High-Resolution Galileo Mosaics: M. Milazzo, et al. Table 1. High-Resolution Mosaics of the Galilean Satellites Name Description Phase angle Km/ pixel Lat range Lon range Frame numbers Callisto Callisto Asgard C3 in Voyager context 53 1.139 -9, 80 80, 170 s0368292901 to s0368293200 Callisto Valhalla C9 in Voyager context 94 .8 -18, 50 18, 85 s0401510400.1 to s0401513423.2 Callisto High-Res Cratering C9 in Voyager context 102 .16 -14, 1 2, 13 s0401505500.1 to s0401505565.1 Callisto Smooth Plains C10 in Voyager context 61 .1 11, 18 348.5, 355 s0413386700.1 to s0413388168.3 Callisto Asgard C10 in C3 context 84 .09026 9, 40 135, 148 s0413382800.2 to s0413382953.4 Europa Europa Minos Linea G1 37.26 1.57 -50, 90 300, 150 s0349875100 to s0349875139 Europa Wedges C3 in Voyager context 64.99 .42 -30, 0 180, 210 s0368639400.9 Europa Pwyll crater E4 55.83 1.22 -83.35, 53.57 221.5, 329.17 s0374649000 to s0374649052 Europa Dark lineament E6 39.24 .18 5, 19 265, 280 s0383713700 to s0383713765 Europa Agenor Linea E6 36.54 1.6 -61.72, -26.47 139.19, 225.71 s0383694600.1 to s0383694605.1 Europa Bright Plain E6 in E6 context 39.34 .021 13, 17 272, 275.2 s0383718600.2 to s0383713701.1 Europa High-Res E11 59.59 .0327 33, 38 85, 88 s0420626700 to s0420626765 Europa Mannann’an E11 in G1 context 61.2 .22 25, -35 215, 260 s0420619200.3 to s0349875126.4 Ganymede Ganymede Uruk Sulcus G1 and G2 stereo 38.9 .04 10.45, 12.05 167.86, 169.14 s0349758978.6 to s0349758965.7, s0359945600.2 to s0359945613.2 Ganymede Uruk Sulcus G1 in Voyager context 14 .075 9, 14 165, 172 s0359945600.2 to s0359945613.2 Ganymede Memphis Facula G1 in Voyager context 23.7 .06 12.7, 18.2 132.4, 138 s0349760100.1 to s0349760268.1 Ganymede Dark Floor Crater G2 in Voyager context 23.8 .11 -4.6, 6.5 147.5, 158.6 s0359944145.2 Ganymede Light Dark G2 in Voyager context 18.46 .02 -60, 70 100, 280 x0359946135.2 to s0359946188.2 Boundary Ganymede Galileo Regio G2 in Voyager context 23.8 .09 16, 20.89 145.73, 151.88 s0359944739.6 Ganymede Groovelanes G2 in Voyager context 24.17 .09 37.54, 40.02 198.95, 202.95 s0359944639.3 to s0359944652.3 Ganymede Nippur Sulcus G2 in Voyager context 26.3 .1 44.8, 52.7 202, 206 s0359944439.2, s03599444562.3 Ganymede Pal.impsest G2 in Voyager context 36 .04 -17.89, 53.42 154.45, 246.89 s0359945484.2 to s0359945521.3 Ganymede Transitional G2 in G8 context 29.96 .18 28.53, 35.54 183.98, 191.59 s0359942400.1 to s0359942439.1 Terrain Ganymede Uruk Sulcus G2 in Voyager context 46.89 .04 8.75, 13.73 166.14, 171.19 s0359945600.2 to s0359945613.2 Ganymede Transitional G2 in G8 in Voyager 18.45 .1 24, 57 171, 221 so359944426.2 to s0359942439.1, Terrain, Nippur Sulcus, and context s0394517800.1 to s0394517800.4 Groovelanes Ganymede Achelous G7 in Voyager context 70 .178 59.54, 65.49 6.38, 19.5 s0389923200.1 to s0389923213.2 Ganymede Enki Catena G7 in Voyager context .278 35.5, 41.5 10, 16.8 s0389921100.1, s0389921101.1 Ganymede Kittu Dark Ray G7 in Voyager context 79 .14 -5, -4 330, 339 s0389923800.1 to s0389923946.1 Ganymede Neith G7 in Voyager context 72 .15 24, 35 -1, 11.5 s0389923600.2 to s0389923639.6 Ganymede Nicholson Regio G7 in Voyager context 72 .181 -17, -9.5 -14, -3.5 s0389923000.1 to s0389923027.2 Ganymede Nun Sulci G7 in Voyager context 76 .17 38, 50 312, 330 s0389923400.1 to s0389923413.2 Ganymede Palimpsest G7 in Voyager context 66 .44 22, 45 -40, -10 s0389917900.1, s0389917901.1 Ganymede Anshar Sulcus G8 in Voyager context 73.5 .15 10, 14 188, 195 s0394532865.1 to s0394532878.2 Ganymede Buto Facula G8 in Voyager context 69.2 .19 8, 17 197, 209 s0394532139.1 to s0394532153.1 Ganymede Caldera Features G8 in Voyager context 73 .18 -41, -21 172, 194 s0394532413.1 to s0394532478.2 Ganymede Fractured Dark G8 in Voyager context 78 .16 1.4, 9.9 152.8, 161.4 s0394532745.1, s0394532746.1 Terrain Ganymede Marius Regio G8 in Voyager context 70.1 .29 -29, -9 146, 166 s0394530265.1 to s0394530266.2 Ganymede Melkart Dome G8 in Voyager context 72 .18 -18, -3 179, 193 s0394532265.1 to s0394532279.1 Crater Ganymede Multi Ring Basin G8 in Voyager context 72.6 .24 -35, -5 125, 175 s0394531265.1 to s0394531278.3 Ganymede Pit Crater G8 in Voyager context 73.5 .15 20, 27 190, 197 s0394532965.1, s0394532966.1 Ganymede Regional Context G8 in Voyager context 62.1 .939 11, 68 146, 230 s0394517800.1 to s0394517800.4 Ganymede Tiamat Sulcus G8 in Voyager context 63.3 .496 -11, 10 192, 214 s0394526200.1, s0394526201.2.
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