Observer positions

The number and position of the lightcone observers depends on the simulation box size:

• In the 2.8Gpc and larger boxes, we place eight observers in the simulation volume at positions half way between the box centre and the corners.

• In the 1Gpc boxes, we place two observers at points half way between the centre of the box and two diagonally opposite corners.

Observer positions in the 2.8Gpc boxes

Observer positions in the 1Gpc boxes

The tables below show the exact coordinates of the observers in each box.

Positions in the 1Gpc boxes

Observer	x [Mpc]	y [Mpc]	z [Mpc]
0	750	750	750
1	250	250	250

Positions in the 2.8Gpc boxes

Observer	x [Mpc]	y [Mpc]	z [Mpc]
0	700	700	700
1	700	700	2100
2	700	2100	700
3	700	2100	2100
4	2100	700	700
5	2100	700	2100
6	2100	2100	700
7	2100	2100	2100

Positions in the 5.6Gpc box

Observer	x [Mpc]	y [Mpc]	z [Mpc]
0	1400	1400	1400
1	1400	1400	4200
2	1400	4200	1400
3	1400	4200	4200
4	4200	1400	1400
5	4200	1400	4200
6	4200	4200	1400
7	4200	4200	4200

Positions in the 11.2Gpc box

Observer	x [Mpc]	y [Mpc]	z [Mpc]
0	2800	2800	2800
1	2800	2800	8400
2	2800	8400	2800
3	2800	8400	8400
4	8400	2800	2800
5	8400	2800	8400
6	8400	8400	2800
7	8400	8400	8400