  As a step towards our understanding of galaxy evolution and for testing
predictions of cosmological models we started a survey for galaxy clusters
intending to identify candidates out to redshifts of ~1.5: HIROCS (= Heidelberg
InfraRed/Optical Cluster Survey) is a multi-color survey (B, R, i, z and H)
covering 11 square degrees in four fields on the sky. Our survey aims at a
5sigma detection of an L*+1 elliptical galaxy at z = 1.5. Classification of all
objects and determination of photometric redshifts is done by the
multi-color-classification scheme developed for the CADIS and COMBO-17 surveys.
Cluster identification will be done by identifying overdensities in 3D-space
(RA, DEC, zphot). First tests of our cluster finding algorithm on fields
observed within CADIS and COMBO-17 revealed several cluster candidates.
