PM analysis of the sources in the field. Only stars that passed the photometric quality selections and have measurable PMs are included. (a): VPD for all selected sources. (b): VPD for sources that satisfy the PM selection criterion (μ_R < 3 mas yr⁻¹; see panels e and i). (c): VPD for sources that do not meet the PM selection. (d): HST-based CMD for all selected sources. The WD CS is highlighted in blue within the green fiducial lines. The 5σ and 3σ detection limits are marked in light and dark grey, respectively. (e): One-dimensional PM (μ_R) as a function of the HST magnitude (m_F606W). The PM selection threshold (vertical red line) separates cluster members from field stars. (f): Same CMD as in panel (d) but only for stars that pass the PM selection. (g): Same CMD as in panel (d) but only for stars that fail the PM selection. (h): JWST-based CMD for all selected sources. (i): One-dimensional PM (μ_R) as a function of the JWST magnitude (m_F150W2). (j): Same CMD as in panel (h) but only for stars that pass the PM selection. (k): Same CMD as in panel (h) but only for stars that fail the PM selection. In all panels except (a), (d), and (h), cluster members (i.e. stars with μ_R < 3 mas yr⁻¹) are shown as dots, and non-members are marked with crosses.