Originator:
Planetary Data System NASA/Jet Propulsion Laboratory Mail Stop 525-3610 4800 Oak Grove Drive Pasadena, CA 91109 (818) 306-6130 PDS_OPERATOR@JPLPDS.JPL.NASA.GOVNSSDC ID: 75-075A-01c/d and 75-083A-01a/b
Volume Number Frame Numbers 1 122S01-166S24 2 167S01-210S42 3 211S01-251S30 4 252S01-321S72 5 319S12-363S56 6 365S01-405S30 7 406S11-436S36 8 437S01-467S36 9 468S01-485S24 10 003A01-038A32 11 039A01-070A32 12 071A01-105A48 13 106A01-212A64 14 214A01-272A36 15 273A01-322A40 16 326A01-372A50 17 373A01-414A40 18 416A01-443A10 19 444A01-472A60 20 474A01-527A10 21 529A01-572A36 22 573A01-605A96 23 606A01-634A48 24 635A01-663A86 25 664A01-693A48 26 694A01-718A60 27 719A01-743A66 28 744A01-771X00 29 772A01-825A52 30 826A01-888A16 31 890A01-919A62 32 920A06-980A10 51 004Y01-048B53 52 049B01-077B95 53 078B11-140B54 54 141B01-187B52 55 188B01-262B75 56 264B01-308B90 57 310B31-355B60 58 356B01-392B20 59 393B01-434B14 60 437B10-497B96 61 499B01-544B16 62 545B01-576B60 63 577B01-703B72 64 704B01-705B52This data set includes sub-sampled versions of Viking Orbiter images on CD-ROM that are intended to facilitate rapid viewing of the image collection. The image data in these browse images have been reduced in size by sub-sampling the original image by a factor of 4 in both lines and samples. Thus, the data volume has been reduced by a factor of 16. A Viking Orbiter browse image contains 264 lines and 300 samples. A filtering procedure was used in generating the browse images because Viking Orbiter images commonly contain noisy data or are missing data.
See the section on MDIM for the difference between the Viking CD-ROM set the MDIM set. All volumes of the Viking contain both browse and compressed images.
These CD-ROMs contain images taken by the Visual Imaging Subsystems (VIS) on NASA's twin Viking Orbiter spacecraft to Mars. These images are copies of the Experiment Data Record (EDR) images. No processing has been performed on the EDR image data. Thus, processing to perform radiometric and geometric calibration, removal of noise, and interpolation of missing data may be required to interpret the images. EDR images in this CD-ROM set have been compressed so that more data can fit onto each CD-ROM volume. The image data can be restored to their uncompressed format using algorithms described in documentation on these discs. Image decompression software in several programming languages is also included on the discs. Most of the planet was covered at resolutions from less than 20 to greater than 250 meters per pixel