projector - parallel rays

I’m trying to set up a projector to parallel to a terrain to simulate contours. But the projected map spreads out over distance. Is there a way to prevent that? Thanks.

Change your projector to orthographic and set the orthographic size as you see fit.

Yes, i should have mentioned that. I have both of those things set. The projected image increases size the further it gets from the projector. I’ve been messing around with the texture settings.

I got it to look good with a larger image, and single pixel lines.