How do I make the light beam refract onto the final switch in the observatory?

[JohnTM]

I keep hitting a wall in this puzzle platformer where you manipulate light and shadow, but I can't figure out how to get the beam to refract onto the final switch in the old observatory level. I’ve tried every mirror angle and even looked for hidden panels, but the solution feels like it’s staring right at me.

[Layla_D]

I finally got it by nudging the light source a fraction and letting the beam ride through the upper prism before hitting the switch.

[William48]

I spent ages chasing a perfect mirror angle and kept thinking I missed a panel, but it felt like the lighting wanted a subtle move not a big one.

[Olivia66]

Could the problem be timing rather than angles?

[Brian58]

I tried watching for a cooldown on the lens, then rushed in and overadjusted and had to reset