2.5′ by 2.5′ box around cluster candidate 43. The red points in the panel upper left are UKIDSS non-stellar sources brighter than 17^m in K, black points other sources brighter than 17^m in K and yellow points sources fainter than 17^m in K. Brown points are sources listed in 2MASS but not in UKIDSS GPS. Sources encircled by a yellow line do not have coverage in all three bands. The stars encircled by a green line in the catalogue data plot and the WSA grey scale image lower left cause non-stellar classifications and produce false positive clusters: the algorithm removes the sources marked with a green cross. The WSA false colour blow-up image (J image coded in blue, H image in green and K image in red) of the cluster candidate is shown to the right of the grey scale image. Image orientation is North up and East left. All the UKIDSS GPS sources within the catalogue data plot are plotted in the (H−K,J−H) colour–colour plot on the right. Blue dots are sources brighter than 17^m and green dots fainter than 17^m in K. The red filled circles mark UKIDSS sources (both stellar and non-stellar) in the cluster direction brighter than 17^m in K.