WOCS. LXXII. A uvbyCaHb study of NGC 2506

Precision uvbyCaH{beta} photometry of the metal-deficient, old open cluster NGC2506 is presented. The survey covers an area of 20'*20' and extends to V~18 for b-y and H{beta}...本工作报道了金属贫乏型年老疏散星团NGC2506的高精度uvbyCaHβ测光观测数据。该巡天覆盖20′×20′的天区，针对b-y与Hβ波段，其测光极限可至V星等约18。