Comparison of SIF CF data extended with Gaia DR3 and HST data. Left: distribution of the combined Gaia SIF CF and Gaia DR3 sources (solid dark blue) versus Gaia G magnitude; of these, sources matched (dashed) and not matched (dash-dotted) to HST; of the latter, not blended sources (dotted). Centre: distribution of all HST sources (solid teal) versus Gaia G magnitude; HST sources matched (dashed) and not matched (dash-dotted) to SIF CF sources; unmatched HST sources potentially resolvable by SIF CF (dotted). Right: fraction of combined SIF CF and Gaia DR3 sources not matched to HST (dash-dotted dark blue); of these, not HST blends (dotted dark blue); fraction of HST sources not matched to SIF CF (dash-dotted teal); fraction of resolvable, unmatched HST sources (dotted teal) versus (estimated) G magnitude.