Space Scanner detects rocket too late

I have 3 scanners connected and I have the same problem. I would assume this is something (game mechanics) that is not finished.
Would be nice to get an answer from a dev.

Yeah the the timing needs tweaking. Mine says 150 - 200 seconds notice, but it ain't. Bye-bye doors. Pro-tip... the rockets currently don't take damage from meteors anyway. Screw the doors

Currently, the only way to save your doors if you want to automate their opening is to build your rocket silo far enough from the top of the sky to allow the doors to open completely, because the scanner detect the rocket only when it enter the map.