How to hide light from second camera

Hi there,

look at t$$anonymous$$s scene. There is the problem that the main camera does not show the object (thats correct), but the light that object emits is still visible. I don't get out, how to $$anonymous$$de the light as well.

I thought on lightmaps - may be it is baked lighting. But I couldn't figured out, how to remove that certain light an surfaces.

Scene:

I have a main camera: its settings

I t$$anonymous$$nk, I do it right, to uncheck the layers to prevent from being rendered in main camera ... But why is the light still rendered, even if the GameObject and the Light are on the excluded / unchecked layer mask?

For so far, I disabled and cleared the baked light map to ensure, it is no light rendered on the texture in the red circle.

I try to show up lights only in the render texture. later I want apply post processing effects as well to that render texture display. don't know how to do that only for that small camera view ...

Does anyone has an idea, why the light is rendered on that surface?

Thank you, Bjoern