Face-on deprojection of IRDIS H-band Q_ϕ data, corrected by r² light dilution, and with special logarithmic colour scale to highlight the faint outer spirals. The two opposite arms at east and west (C1 and S1) stand out from the disk. HD 34700 В component is also visible in the FoV, in the upper-left corner. The inner ring plane (i ~ 40°, see Table 3) was considered for deprojecting to face-on.