Increasing the raw contrast of VLT/SPHERE with the dark hole technique - III. Broadband reference differential imaging of HR4796 using a four-quadrant phase maskR. Galicher, A. Potier, J. Mazoyer, Z. Wahhaj, P. Baudoz and G. ChauvinA&A, 686 (2024) A54DOI: https://doi.org/10.1051/0004-6361/202449196
