Use sliders to adjust parameters.
θ: The angular radius of the lightcone
l/Lbox: The ratio of the lightcone length to simulation box length
Viewer updates automatically on slider move.
Plot gives RA and DEC values with coordinate axis aligned to the simulation box.
Hover over the plot; regions with value 0 are ideal for directing the lightcone to avoid repeated structures.

For finer tuning and source code click on the badges below

Optimal directing angles for the lightcone

θ (deg): 4

l/Lbox: 2