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This data product is a high-resolution presentation of the IRAS
hours-confirmed (HCON) sky surveys in image
form. It consists of 212 16.5° x 16.5° fields for
HCONs 1-3 covering the whole sky with field
centers spaced by approximately 15°. An individual image, stored
in FITS format, is a 499 x 499 array of 2' x 2' pixels into which the
IRAS survey data were mapped. The effective angular resolution is
about 4' - 6'. Each image is in a
gnomonic (tangent plane)
projection.
The Sky Flux Plates have been superseded by the ISSA Atlas and Reject Fields. The processing for the ISSA images included a superior destriping algorithm as well as subtraction of a model for the zodiacal intensity. Version and release date: 1.0, 1984 Nov |