The GONG data reduction and analysis system.

Details The GONG data reduction and analysis system. The GONG data reduction and analysis system.

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988esasp.286..217p&link_type=abstract

Symposium on Seismology of the Sun and Sun-Like Stars, ESA SP-286, p. 217 - 221

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3

Data Centers: Computing, Data Centers: Solar Patrol, Data Centers: Solar Oscillations

Scientific paper

Each of the six GONG observing stations will produce three, 16-bit, 256×256 images of the Sun every 60 seconds of sunlight. These data will be transferred from the observing sites to the GONG Data Management and Analysis Center (DMAC), in Tucson, on high-density tapes at a combined rate of over 1 gigabyte per day. The contemporaneous processing of these data will produce several standard data products and will require a sustained throughput in excess of 7 megaflops. Peak rates may exceed 50 megaflops. Archives will accumulate at the rate of approximately 1 terabyte per year, reaching nearly 3 terabytes in three years of observing. Researchers will access the data products with a machine-independent GONG Reduction and Analysis Software Package (GRASP). Based on the Image Reduction and Analysis Facility (IRAF), this package will include database facilities and helioseismic analysis tools. Users may access the data as visitors in Tucson, or may access DMAC remotely through networks, or may process subsets of the data at their local institutions using GRASP or other systems of their choice. Elements of the system will reach the prototype stage by the end of 1988. Full operation is expected in 1992 when data acquisition begins.

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