What is the AUX port on my NexStar SLT for?

The AUX port can be used with the StarSense AutoAlign accessory to add automatic alignment to your telescope, or with the CN16 GPS accessory to get location and time information for your scope from the GPS satellite system.

It can also be used to plug in the hand control if the regular hand control port is not working or blocked for some reason.

Updated 12/27/13