Data Set Information
DATA_SET_NAME MGS SAMPLER MARS ORBITER CAMERA IMAGES
DATA_SET_ID MGS-M-MOC-4-SAMPLER-V1.0
NSSDC_DATA_SET_ID
DATA_SET_TERSE_DESCRIPTION
DATA_SET_DESCRIPTION MOC is a three-component imaging system (one narrow-angle and two wide-angle cameras) designed to take high spatial resolution pictures of the surface and to obtain lower spatial resolution, synoptic coverage of the surface and atmosphere [Malin et al., 1992; 1998]. The cameras are based on the 'push broom' technique, acquiring one line of data at a time as the spacecraft orbits the planet. Using the narrow-angle camera during the Mapping Phase of the mission, areas ranging from 2.8 x 2.8 km to 2.8 x 25.2 km (depending on available internal digital buffer memory) can be imaged at about 1.4 m/pixel. Additionally, lower-resolution pictures (to a lowest resolution of about 11 m/pixel) can be acquired by pixel averaging; these images can be much longer, ranging up to 2.8 x 500 km at 11 m/pixel. High-resolution data will be used to study sediments and sedimentary processes, polar processes and deposits, volcanism, and other geologic/geomorphic processes. The MOC wide-angle cameras are capable of viewing Mars from horizon to horizon and are designed for low-resolution global and intermediate resolution regional studies. Low-resolution observations can be made every orbit during the Mapping Phase, so that in a single 24-hour period a complete global picture of the planet can be assembled at a resolution of at least 7.5 km/pixel. Regional areas (covering hundreds of km on a side) may be imaged at a resolution of better than 250 m/pixel at the nadir. These images will be particularly useful in studying time-variable features such as lee clouds, the polar cap edge, and wind streaks, as well as acquiring stereoscopic coverage of areas of geological interest. The limb can be imaged at vertical and along-track resolutions of better than 1.5 km. Color filters within the two wide-angle cameras permit color images of the surface and atmosphere to be made to distinguish between clouds and the ground and between clouds of different composition. During the Orbit Insertion Phase of the mission a number of MOC images have been acquired on a best efforts basis. Most of the data have been acquired in the high resolution mode. Nine of these images are included on this MGS Science Sampler volume and are stored as GIF files.
DATA_SET_RELEASE_DATE 1998-06-26T00:00:00.000Z
START_TIME 1997-10-03T12:00:00.000Z
STOP_TIME 1998-01-21T12:00:00.000Z
MISSION_NAME MARS GLOBAL SURVEYOR
MISSION_START_DATE 1994-10-12T12:00:00.000Z
MISSION_STOP_DATE 2007-09-30T12:00:00.000Z
TARGET_NAME MARS
TARGET_TYPE PLANET
INSTRUMENT_HOST_ID MGS
INSTRUMENT_NAME MARS ORBITER CAMERA
INSTRUMENT_ID MOC
INSTRUMENT_TYPE LINEAR ARRAY CAMERA
NODE_NAME Geosciences
ARCHIVE_STATUS ARCHIVED
CONFIDENCE_LEVEL_NOTE N/A
CITATION_DESCRIPTION Malin, M., and E. Eliason, Mars Global Surveyor Mars Orbiter Camera Sampler, MGS-M-MOC-4-SAMPLER-V1.0, NASA Planetary Data System, 1998.
ABSTRACT_TEXT Mars Orbiter Camera (MOC) data products on this volume are nine Narrow Angle Camera images selected from orbits between 13 and 100; i.e., some images are from outside the Assessment Orbits range of 19-36. The images are in GIF format with detached PDS labels, and they have had some cosmetic corrections applied (see VOLINFO for description). As the images are large, reduced-size versions have also been included for browsing. To assist in locating the images on the planet, 'finder frames' have been provided; these are Viking Orbiter MDIMs showing the outlines of the MOC images in the context of the larger area. The locations of the MOC images are also shown on the Mercator and South Polar Stereographic orbit ground track maps below. (Note: MOC image files are named according to the form NAnnnnxx, where nnnn is the orbit number and xx is the image number within the orbit.)
PRODUCER_FULL_NAME MICHAEL MALIN
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