  Cosmic ray primary particles initiate extended air showers (EAS) in the
atmosphere. The directions of these cosmic rays approximate a homogeneous
isotropic distribution. The HiSPARC experiment, consisting of a growing number
of measurement stations scattered over the Netherlands, Denmark and the United
Kingdom, detects EAS particles using scintillators. These detections facilitate
reconstructions of the direction of cosmic ray primaries.
  The acceptance of the HiSPARC experiment, limited due to the generating
mechanism of EASs in the atmosphere and the location of the measurement
stations, has been analysed.
