[ascl:2004.015]
IRDAP: SPHERE-IRDIS polarimetric data reduction pipeline
van Holstein, R. G.;
Girard, J. H.;
de Boer, J.;
Snik, F.;
Milli, J.;
Stam, D. M.;
Ginski, C.;
Mouillet, D.;
Wahhaj, Z.;
Schmid, H. M.;
Keller, C. U.;
Langlois, M.;
Dohlen, K.;
Vigan, A.;
Pohl, A.;
Carbillet, M.;
Fantinel, D.;
Maurel, D.;
Origné, A.;
Petit, C. Ramos, J.;
Rigal, F.;
Sevin, A.;
Boccaletti, A.;
Le Coroller, H.;
Dominik, C.;
Henning, T.;
Lagadec, E.;
Ménard, F.;
Turatto, M.;
Udry, S.;
Chauvin, G.;
Feldt, M.;
Beuzit, J. -L.
IRDAP (IRDIS Data reduction for Accurate Polarimetry) accurately reduces SPHERE-IRDIS polarimetric data. It is a highly-automated end-to-end pipeline; its core feature is model-based correction of the instrumental polarization effects. IRDAP handles data taken both in field- and pupil-tracking mode and using the broadband filters Y, J, H and Ks. Data taken with the narrowband filters can be reduced as well, although with a somewhat worse accuracy. For pupil-tracking observations IRDAP can additionally apply angular differential imaging.