A-PHOT: a new, versatile code for precision aperture photometry E. Merlin, S. Pilo, A. Fontana, M. Castellano, D. Paris, V. Roscani, P. Santini and M. Torelli A&A, 622 (2019) A169 Published online: 15 February 2019 DOI: 10.1051/0004-6361/201833991