Search Publications

Precise photometry and astrometry in the core of the globular cluster NGC 6121 using PSF-R techniques

Tolstoy, Eline; Milli, Julien; Fiorentino, Giuliana +6 more

Precise stellar photometry and astrometry require the best possible modelling of the point spread function (PSF). To date, the best performances have been obtained when building the PSF a posteriori, meaning directly from the image of dense stellar fields, by exploiting the fact that each star represents a different realisation of the same PSF. Th…