And idea how long Tachyon Cylinder and Subspace Seeker last? I know that they are temporary effects but do they last 10 minutes so you need to scan real fast and then go back to find your recently scanned planets to check their stats or do they last an hour so you have time to regain some energy and keep scanning.

Also, anyone know if the effects stack? I know you can't use 2 of the same but if you use a seeker after a cylinder does it over-ride the previous artifact?

Thanks,
Sean (coming up on a very expensive level 44 scan)

Subspace+tachyon = 150+50 (they do add like Crimson+ancient foci)

They both lasts now 60 minutes each. (or at least they did during my last scan)

Good info, I'll be doing the same for my lvl 52 scan fest.

Do 2 Tachyon Cylinders stack the boost? If yes, is there a max number you can have working at anyone time?

From all I know, same artifacts do not stack.

If you see any active effects that do stack (with the same effect), it most probably is a reward from mission and is not removable it is not removable.