Table 1: Imaging: summary of the observations.
Filter ESO id No. of exp. Total exp. Seeing Mag. limit (AB)

(s) (arcsec) (5 $\sigma$ , $2\times\it FWHM$ )

V V/89 5 750 1.35 22.5

R Rc/162 5 750 1.15 22.7

I Ic/Iwp 10 1800 1.25 21.5

**Table 1:** Imaging: summary of the observations.
Filter	ESO id	No. of exp.	Total exp.	Seeing	Mag. limit (AB)
			(s)	(arcsec)	(5 $\sigma$ , $2\times\it FWHM$ )
V	V/89	5	750	1.35	22.5
R	Rc/162	5	750	1.15	22.7
I	Ic/Iwp	10	1800	1.25	21.5

Source LaTeX | All tables | In the text

	1 Introduction
	2 The data
	3 Cluster membership
	4 Colour properties and spatial morphology of A3921
	5 Cluster kinematics
	6 Dynamical study of the system
	7 Spectral properties of the cluster members
	8 Discussion and conclusions
	Appendix A: Red sequence identification
	References