Well I've bought 2 new eyepieces recently, only had the chance to use ONE of them, ONE time and not for long. But I will get the ArgoNavis, almost certainly, because.. it's a COMPUTER! And computers are the only thing that push astronomy to second place for me (did I say that out aloud?). So I'm destined to have one. It's written in the .. er .. the stars. I will learn star-hopping, Telrad, constellations.. I promise! Really...
