A NIR search for high-redshift clusters
  We describe our preliminary results on a search for high-redshift ($z >$ 0.5) galaxy clusters using near-infrared photometry obtained with the Omega camera at the 3.5m telescope at Calar Alto. 
C. Mendes de Oliveira, U. Hopp, R. Bender, N. Drory, R.P. Saglia