Rhea Cassini - Voyager Global Mosaic 417m
- Primary Authors
- Roatsch, T., Kersten, E., Hoffmeister, A., Wahlisch, M.
- Originators
- NASA, JPL, Space Science Institute
- Publisher
- USGS Astrogeology Science Center
- Abstract
- Product Information: This global digital map was created using data taken during Cassini and Voyager spacecraft flybys of Rhea. It is the first mosaic of Rhea to be created using mostly only Cassini images. The map is an equidistant projection and has a scale of 417 meters per pixel (m; 1,370 feet) in the full size version. The mean radius of Rhea used for projection of this map is 764.1 kilometers (474.8 miles). This map is an update to the version released to the Photojournal in January 2011 as PIA12821 (NASA JPL, 2011) and contains data from Cassini's March 10, 2012, flyby of Rhea. Six Voyager images fill gaps in Cassini's coverage of the north pole (Roatsch et al., 2016). Mission and Instrument Information: The Cassini-Huygens mission was a joint endeavor between the Italian Space Agency, the European Space Agency (ESA) and National Aeronautics and Space Administration (NASA). The Cassini-Huygens mission launched from Cape Canaveral Air Force Base in Florida on October 15, 1997 and ended on September 15, 2017 when Cassini began its Final Entry into Saturnâs Atmosphere. The primary mission ran from July 2004 â June 2008, the first mission extension (Equinox) was from July 2008- October 2010 and was followed by a final extended mission (Solstice) from October 2010 â September 2017. The imaging team consists of scientists from the US, England, France, and Germany. The imaging operations center and team lead (Dr. C. Porco) are based at the Space Science Institute in Boulder, Colorado, USA. The Voyager I spacecraft launched September 5, 1977 and passed through the Saturnian system on November 12, 1981. Voyager 2 launched August 20, 1977 and made a similar encounter with Jupiter on July 9th, 1979. The spacecraft carried both wide- and narrow- angle cameras, which were able to capture and return moderate- to high- resolution images of the satellites Rhea, Dione, Enceladus, Mimas, Tethys, and Iapetus. The rapid speed of the spacecraft as it approached the satellites resulted in significant mis-matches of image resolution and image blur (Greely & Batson, 2007; Batson, 1984). References: Batson, R. (1984). Voyager 1 and 2 Atlas of Six Saturnian Satellites (NASA-SP-474). Washington, DC: National Aeronautics and Space Administration (NASA). https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19840027171.pdf Greely, R., & Batson, R. (2007). Planetary Mapping. (ISBN 0-521-30774-0). New York, NY: Cambridge University Press. National Aeronautics and Space Agency (NASA) Jet Propulsion Laboratory (JPL) (2011). Photojournal: PIA12821: Map of Rhea - January 2011. https://photojournal.jpl.nasa.gov/catalog/PIA12821 Roatsch, T., Kersten, E., Matz, K.-D., Scholten, F., & Porco, C. C. (2016). Cartography of the medium-sized saturnian satellites based on Cassini-ISS images. Paper presented at the Enceladus and the Icy Moons of Saturn Conference, Lunar and Planetary Institute, Boulder, CO. https://www.hou.usra.edu/meetings/enceladus2016/pdf/3032.pdf
- Purpose
- To create a mosaic of Rhea for planetary studies.
Contact and Distribution
- Format
- Global Mosaic, Raster Data, Remote-sensing Data
- Access Constraints
- Public domain
- Access Scope
- PDS
- Use Constraints
- Please cite authors
- Series Id
- PIA 14928
- Edition
- August 16, 2012
- Supplemental Information
- http://ciclops.org, http://www.ciclops.org/view/7313/Map-of-Rhea---March-2012, https://solarsystem.nasa.gov/missions/cassini/overview/
- Native Data Set Environment
- ISIS v3
- Astrogeology Theme
- Geomorphology, Remote Sensing, Satellites
- Mission Names
- Cassini-Huygens, Voyager
- Instrument Names
- SSI
- Online Package Link
- https://astrogeology.usgs.gov/search/map/rhea_cassini_voyager_global_mosaic_417m
- External File Size
- 64 MB
- Online File Link
- https://planetarymaps.usgs.gov/mosaic/Rhea_Voyager_mosaic_global_833m.tif
- Contact Address
- 2255 N. Gemini Drive
- Contact City
- Flagstaff
- Contact State
- AZ
- Contact Postal Code
- 86001
- Contact Email
- astroweb@usgs.gov
- Currentness Reference
- Publication date
- Progress
- Complete
- Update Frequency
- None planned
- Completeness Report
- Six images from NASA's Voyager mission fill the north polar gaps in Cassini's coverage.
- Process Description
- Image Preparation: Roatsch, T., Kersten, E., Hoffmeister, A., Wahlisch, M.
Lineage
- Process Date
- 2012-03-01
- Source Title
- Map of Rhea - March 2012
- Source Online Linkage
- {https://pds-imaging.jpl.nasa.gov/volumes/iss.html,https://pds-imaging.jpl.nasa.gov/volumes/voyager.html#vgrISSEDR-J,https://pds-imaging.jpl.nasa.gov/portal/cassini_mission.html,https://pds-imaging.jpl.nasa.gov/portal/voyager_mission.html}
- PDS Status
- PDS 3 Like
Geospatial Information
- Target
- Rhea
- System
- Saturn
- Minimum Latitude
- -90
- Maximum Latitude
- 90
- Minimum Longitude
- -180
- Maximum Longitude
- 180
- Direct Spatial Reference Method
- Raster
- Object Type
- Grid Cell
- Raster Row Count (lines)
- 5760
- Raster Column Count (samples)
- 11520
- Bit Type (8, 16, 32)
- 8
- Quad Name
- Radius A
- 764100
- Radius C
- 764100
- Bands
- 1
- Pixel Resolution (meters/pixel)
- 416.75190045277
- Scale (pixels/degree)
- 32
- Map Projection Name
- Simple Cylindrical
- Latitude Type
- Planetocentric
- Longitude Direction
- Positive West
- Longitude Domain
- -180 to 180
