We overview the current status of photometric analyses of images collected with Multi Conjugate Adaptive Optics (MCAO) at 8-10m class telescopes that operated, or are operating, on sky. Particular attention will be payed to resolved stellar population studies. Stars in crowded stellar systems, such as globular clusters or in nearby galaxies, are ideal test particles to test AO performance. We will focus the discussion on photometric precision and accuracy reached nowadays. We briefly describe our project on stellar photometry and astrometry of Galactic globular clusters using images taken with GeMS at the Gemini South telescope. We also present the photometry performed with DAOPHOT suite of programs into the crowded regions of these globulars reaching very faint limiting magnitudes Ks ~21.5 mag on moderately large fields of view (~1.5 arcmin squared). We highlight the need for new algorithms to improve the modeling of the complex variation of the Point Spread Function across the field of view. Finally, we outline the role that large samples of stellar standards plays in providing a detailed description of the MCAO performance and in precise and accurate colour{magnitude diagrams.
@article{arxiv.1608.01457,
title = {Stellar photometry with Multi Conjugate Adaptive Optics},
author = {Giuliana Fiorentino and Davide Massari and Alan McConnachie and Peter B. Stetson and Giuseppe Bono and Paolo Turri and David Andersen and Jean-Pierre Veran and Emiliano Diolaiti and Laura Schreiber and Paolo Ciliegi and Michele Bellazzini and Eline Tolstoy and Matteo Monelli and Giacinto Iannicola and Ivan Ferraro and Vincenzo Testa},
journal= {arXiv preprint arXiv:1608.01457},
year = {2016}
}