Color ACS/HST image of the sub cluster component of 1E 0657-56 (blue–F435W, green–F606W, red–F814W). Multiple images considered in this work are marked with color circles (dashed line circles mark the predicted but not confirmed positions of counter images). In this work, we spectroscopically measured a redshift of z = 2.99 for the multiply-imaged system H (see Sect. 2.3). System 7 (white dashed circle) is a multiply-imaged candidate and is not a part of model constraints due to large color uncertainties. The white line represents the critical line at redshift z = 2.99.