We present CCD photometry in the Johnson U, B and V and Kron-Cousins I passbands for the open cluster NGC 2587. The sample consists of 4406 stars reaching down to V~21.0. We developed a new method to clean statistically the colour-magnitude diagrams. NGC 2587 appears to be a sparse, relatively bright open cluster, with a few tens of members projected on to a populous star field.
Cone search capability for table J/MNRAS/397/1073/table2 (Calibrated UBVI data of standard stars)
Cone search capability for table J/MNRAS/397/1073/table3 (CCD UBVI data of stars in the field of NGC 2587)