The Shane-Wirtanen counts

Authors :: Geller, M. J
Kurtz, M. J
De Lapparent, V
Source :: Astrophysical Journal, Part 2 - Letters to the Editor. 287
Publication Year :: 1984
Publisher :: United States: NASA Center for Aerospace Information (CASI), 1984.
Abstract: It is shown that the 2.5 degree-break in the galaxy correlation function derived from the Shane-Wirtanen star counts is indistinguishable from an artifact introduced by residual systematic variations in the effective magnitude limit from plate to plate. In order to avoid the introduction of a break, the maximum error from plate to plate must be no more than about 0.05 mag. Other large scale features in the data which are also affected by the systematic variations are discussed.

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