So... It has been a very long time since I logged in to play SC. I thought I'd play around and get to know the controls and ships again. My question is how do you know if your EM and IR signature is good. For example, the terrapin - engines off EM @ 2050 and IR @ 2828, engines on EM @ 4344 and IR @ 5169. So I got in the Hornet Ghost - engines off EM @ 1894 and IR @ 2682, engines on EM @ 4323 and IR @ 5171. Then i put the Ghost into stealth EM dropped to 1157 with everything suppressed and IR stayed around 4100 with the engines on. So what does this mean... seems like the terrapin and ghost are very similar. How close is too close to be found? I know a lower rating is better, but I do not understand the distance. Could my terrapin example with the engines on be detected all the way across a solar system? My final test was the reclaimer. Engines off EM @ 18000 and IR @ 24000, Engines on EM @ 22000 and IR @ 27000. Seems to me, if I am hunting I'd be looking for IR as opposed to EM... can some one explain how this is going to work? Infrared Signature – Powered components on a ship generate heat. Most of this heat is collected by the cooling system (depending on efficiency) and ejected from the craft via heat exchangers. This ejected heat, coupled with any uncooled heat from thrusters and other components, can be detected by infrared cameras. Players will be able to use standard heat seeking missiles and other infrared tracking devices to locate and track objects by their heat output. Electromagnetic Signature – Anything that is consuming power will generate an EM signature, though, in normal circumstances, the primary contributors will be the ship’s energy weapons, shield generator and power plants. Power management will be critical adjusting a ship’s EM signature. For example, captains may choose to lower their signature with less protective shields or be better shielded but highly visible. EM signature is specifically used by certain missile tracking systems and advanced EMF Detectors.