Spatial Resolution of Merged GONG+ High-Degree Acoustic Spectra

Details Spatial Resolution of Merged GONG+ High-Degree Acoustic Spectra Spatial Resolution of Merged GONG+ High-Degree Acoustic Spectra

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...200.0406g&link_type=abstract

American Astronomical Society, 200th AAS Meeting, #04.06; Bulletin of the American Astronomical Society, Vol. 34, p.644

Physics

Optics

Scientific paper

The Global Oscillation Network Group has finished upgrading its CCD cameras from 256 by 242 pixels (``GONG Classic") to 1024 by 1024 pixels (``GONG+"). Power spectra have been produced for a range of spherical harmonic degrees from 0 through 1200 using the merged time series of a network day assembled from the GONG+ observing sites. These spectra illustrate the spatial resolution of the GONG+ network as well as the effectiveness of the merging process at high degrees and indicate that the GONG+ network will produce useful information to the limits set by the atmosphere and the instrumentation optics.

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