Data Set Information
DATA_SET_NAME VG1/VG2 SR ISS RING PROFILES V1.0
DATA_SET_ID VG1/VG2-SR-ISS-4-PROFILES-V1.0
NSSDC_DATA_SET_ID
DATA_SET_TERSE_DESCRIPTION
DATA_SET_DESCRIPTION Data Set Overview : This data set contains derived radial profiles from the finest- resolution Voyager images of Saturn's rings. It has been released to support the analysis of Cassini data obtained during Saturn Orbit Insertion on July 1, 2004. The two profiles currently provided show the dark side of the rings from Voyager 1 and the lit side from Voyager 2. Parameters : The measured quantity is I/F, where intensity I is expressed relative to F where pi*F is the incident solar flux density. By this definition, I/F : 1 for a perfectly-diffusing 'Lambert' surface when illuminated and viewed normally. At phase angle 0 (exact backscatter), I/F equals a surface's geometric albedo. Processing : Details of the processing are found in the file DOCUMENT/PROFILES.TXT. Data : The source data files are the Voyager images. The derived files provided are radial profiles of I/F vs. radius in the ring plane. Ancillary Data : No ancillary data has been provided. Coordinate System : Not applicable. Software : None provided. Media/Format : This data set is archived on compact disc (CDROM) media. Organization and formats are according to PDS and ISO 9660 level 2 standards.
DATA_SET_RELEASE_DATE 2006-08-01T00:00:00.000Z
START_TIME 1980-11-01T12:00:00.000Z
STOP_TIME 1981-12-31T12:00:00.000Z
MISSION_NAME VOYAGER
MISSION_START_DATE 1972-07-01T12:00:00.000Z
MISSION_STOP_DATE N/A (ongoing)
TARGET_NAME S RINGS
TARGET_TYPE RING
INSTRUMENT_HOST_ID VG1
VG2
INSTRUMENT_NAME IMAGING SCIENCE SUBSYSTEM - NARROW ANGLE
IMAGING SCIENCE SUBSYSTEM - WIDE ANGLE
INSTRUMENT_ID ISSN
ISSW
INSTRUMENT_TYPE CAMERA
NODE_NAME Planetary Rings
ARCHIVE_STATUS ARCHIVED
CONFIDENCE_LEVEL_NOTE Confidence Level Overview : Considerable effort has been expended to ensure that the profiles are geometrically and photometrically accurate Geometric accuracy should be at the level of a few km; the final radial scale has been defined by finding the closest possible match between these profiles and the Voyager PPS ring occultation profile. See PDS volume VG_2801 for that data set. The images were calibrated according to standard procedures, using the VICAR software distributed by JPL. Photometric accuracy should be good to ~5%. Background uncertainties vary across the rings, depending upon proximity to known empty regions. However, background uncertainties are generally much smaller than the signal amplitude. Peer Review : This data set is currently in peer review. Data Coverage and Quality : The provided profiles cover the entire main ring system from inside the C Ring to beyond the edge of the A Ring. The resolution is ~5 km in each of the best profiles from Voyager 1 and Voyager 2.
CITATION_DESCRIPTION Showalter, M.R., and M.K. Gordon, VG1/VG2 SR ISS RING PROFILES V1.0, VG_2810, NASA Planetary Data System, 2004.
ABSTRACT_TEXT This data set contains derived radial profiles from the finest- resolution Voyager images of Saturn's rings.
PRODUCER_FULL_NAME MARK R. SHOWALTER
SEARCH/ACCESS DATA
  • Rings Node Interface
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