How this works in Spage Age

the ion cannon now has a weight of 1000kg. Deliver it to the space platform
and if at least 1 of them is in the hub inventory, build a radar to install it on the current planet.

Auto targeting not using all available ion cannons.

By default 2 are reserved for manual targeting.
see map settings to change this value.

Targeting device in inventory disappears

Don't use the recipe, use the shortcut instead.